{"id":75066,"date":"2025-08-22T01:11:30","date_gmt":"2025-08-22T01:11:30","guid":{"rendered":"https:\/\/www.hashmicro.com\/blog\/?p=75066"},"modified":"2025-12-23T04:06:44","modified_gmt":"2025-12-23T04:06:44","slug":"legacy-system-integration","status":"publish","type":"post","link":"https:\/\/www.hashmicro.com\/blog\/legacy-system-integration\/","title":{"rendered":"A Comprehensive Guide to Legacy System Integration"},"content":{"rendered":"<p>A legacy system is older software or infrastructure that a company still uses for daily operations, even if newer technologies exist. These systems often hold critical data and processes, so they\u2019re hard to fully replace. Even if one wants to replace it, there are so many obstacles to do so.<\/p>\n<p>However, legacy systems usually cannot keep up with modern business needs on their own. They may lack the flexibility to connect with cloud tools, analytics, or automation that companies rely on today. So, how to solve the problems of being unable to change, but still have to modernize?<\/p>\n<p>This is where legacy system integration comes in. By connecting old systems with new applications, you can reap the modern benefits without losing the stability of their existing setup. In this article, we\u2019ll explore how integration works and how the companies can optimize their systems.<\/p>\n<table style=\"border-collapse: collapse; background-color: #fffacd; box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1); border-radius: 25px 25px 25px 25px;\" width=\"100%\">\n<tbody>\n<tr>\n<td style=\"padding: 15px; border: none;\">\n<h3 style=\"margin-bottom: 10px;\"><span style=\"background-color: #990000; color: #ffffff; padding: 5px;\"><b>Key Takeaways<\/b><\/span><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\">Legacy systems still hold critical business data but often struggle to meet modern demands.<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\">Integration offers ways to connect old systems with new applications through methods like APIs, service layers, and data access layers.<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\">While integration improves efficiency and access to modern tools, challenges such as outdated architecture, missing documentation, and security risks must be considered.<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/www.hashmicro.com\/erp-system\">HashMicro ERP<\/a> provides a flexible solution that allows businesses to integrate now and modernize at their own pace.<\/li>\n<\/ul>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><a href=\"https:\/\/www.hashmicro.com\/free-product-tour\/?medium=free-product-tour\" target=\"_blank\"><img decoding=\"async\" loading=\"lazy\" width=\"712\" src=\"https:\/\/www.hashmicro.com\/blog\/wp-content\/uploads\/2025\/11\/Free-Product-Tour-resized.webp\" alt=\"Free Demo\"><\/a><!-- <div id=\"toc_group_article\" style=''>\r\n\t<p style='font-size:25px;font-weight:bold; margin-bottom:0px'>\r\n\t\tTable of Content:\r\n\t<\/p>\r\n\t<ul id=\"list_toc\" class='list_toc'><\/ul>\r\n<\/div> -->\r\n\r\n<!-- <div class=\"dropdown-fixed-top\" id=\"dropdown-fixed-top\">\r\n\t<div class=\"row\">\r\n\t\t<p id=\"pilihDaftarIsi\">Table of Content<\/p>\r\n\t\t<p><i class=\"td-icon-menu-down\"><\/i><\/p>\r\n\t<\/div>\r\n\t\r\n\t<div>\r\n\t\t<ul id=\"list_toc_top\" class='list_toc'><\/ul>\r\n\t<\/div>\r\n<\/div> -->\r\n\r\n<div id=\"placeholder-toc\"><\/div>\r\n<div id=\"toc\">\r\n    <div class=\"header\">\r\n\t<span class=\"toc-title\" id=\"toc-title\">Table of Content<\/span>\t\r\n\t <i class=\"toc-icon\">\r\n        <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"30\" height=\"30\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"#000\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" class=\"header-icon\">\r\n          <path d=\"m6 9 6 6 6-6\" \/>\r\n        <\/svg>\r\n      <\/i>\r\n\t<\/div>\r\n    <div class=\"list\">\r\n      <ul id=\"toc-list\"><\/ul>\r\n    <\/div>\r\n <\/div>\r\n\r\n<style>\r\n\t@media (max-width: 992px) {\r\n\t\t#toc_group_article {\r\n\t\t\tpadding-top: 24px;\r\n\t\t}\r\n\t}\r\n\t\r\n\t#list_toc_float {\r\n\t\tmax-height: calc(100vh - 250px);\r\n\t\toverflow-y: auto;\r\n\t}\r\n\t\r\n\t#list_toc_top {\r\n\t\tdisplay: none;\r\n\t\tbackground: #fff;\r\n\t\tmargin-bottom: 4px;\r\n\t}\r\n\t\r\n\t#list_toc_top li {\r\n\t\tdisplay: block;\r\n\t\tmargin-left: 0;\r\n\t\tlist-style: none;\r\n\t}\r\n\t\r\n\t#list_toc_top a {\r\n\t\tpadding: 5px;\r\n\t\tdisplay: block;\r\n\t}\r\n\t\r\n\t#list_toc_top.show {\r\n\t\tdisplay: block;\r\n\t}\r\n\r\n\t#list_toc_top a {\r\n\t\tcolor: #434343;\r\n\t\tborder-bottom: 1px solid #bbb;\r\n\t}\r\n\t\r\n\t.dropdown-fixed-top {\r\n\t\tposition: fixed;\r\n\t\ttop: 59px;\r\n\t\twidth: 100%;\r\n\t\tz-index: 99;\r\n\t\tborder-bottom: 2px solid #9c171e;\r\n\t\tpadding: 12px;\r\n\t\tbackground: #fff;\r\n\t\twidth: 100%;\r\n\t\tcursor: pointer;\r\n\t\tdisplay: none;\r\n\t\tleft: 0;\r\n\t\tbox-shadow: 0 -2px 7px 6px rgba(0, 0, 0, 0.17);\r\n\t}\r\n\t\r\n\t#dropdown-fixed-top.show {\r\n\t\tanimation: showAnim 0.5s ease;\r\n\t\tdisplay: block;\r\n\t\topacity: 1;\r\n\t}\r\n\t\r\n\t@keyframes showAnim {\r\n\t\tfrom {\r\n\t\t\tdisplay: none;\r\n\t\t\topacity: 0;\r\n\t\t}\r\n\t\tto {\r\n\t\t\tdisplay: block;\r\n\t\t\topacity: 1;\r\n\t\t}\r\n\t}\r\n\t\r\n\t.dropdown-fixed-top #list_toc_top {\r\n\t\tmax-height: calc(50vh - 110px);\r\n\t\toverflow-y: scroll;\r\n\t}\r\n\t\r\n\t.dropdown-fixed-top .row {\r\n\t\tdisplay: flex;\r\n\t\tjustify-content: space-between\r\n\t}\r\n\t\r\n\t.dropdown-fixed-top .row p {\r\n\t\tmargin-bottom: 0;\r\n\t}\r\n\t\r\n\t#pilihDaftarIsi {\r\n\t\tmax-width: 100%;\r\n\t\toverflow: hidden;\r\n\t\twhite-space: nowrap;\r\n\t}\r\n\t\r\n\t@media (min-width: 1018px) {\r\n\t\t.dropdown-fixed-top {\r\n\t\t\tdisplay: none;\r\n\t\t}\r\n\t}\r\n\t\r\n\t#list_toc li {margin-bottom: 0;margin-top: 5px;}\r\n\t#list_toc > li > ul {padding-left: 20px;margin-bottom: 0;}\r\n\t#list_toc{height:max-content;transition:ease-in-out}\r\n\t#list_toc li {margin-bottom: 0;margin-top: 5px;}\r\n\t#list_toc_float li.active > a {color:#b1252d;background: #ffe1e3;}\r\n\t#list_toc_top li.active > a {color:#b1252d;background: #ffe1e3;}\r\n\t#list_toc_float li a {padding:3px 7px}\r\n\t#list_toc_float li a {\r\n\t\tdisplay: block;\r\n\t\tcolor: #000;\r\n\t\tmargin-bottom: 6px;\r\n\t\tpadding-top: 2px;\r\n\t\tpadding-bottom: 2px;\r\n\t\ttransition: all 0.2s ease-in-out;\r\n\t\tfont-size: 15px;\r\n\t\tline-height: 18px;\r\n\t}\r\n\t#list_toc_float li{list-style:none;list-style-position:inside; margin-left:0;}\r\n\t#list_toc_float a:hover{color:#b1252d;}\r\n\t\r\n\t#toc_group_float{\r\n\t\tline-height: 24px;\r\n\t\tmax-height: calc(100vh - 100px);\r\n\t\toverflow: auto;\r\n\t\tz-index: 99;\r\n\t\tdisplay:none!important;\r\n\t\tbackground:#fff;\r\n\t\ttransition:all 0.5s linear\r\n\t}\r\n\t\r\n\t@media (min-width:1019px){\r\n\t\t#toc_group_float {\r\n\t\t\tdisplay:block!important;\r\n\t\t\t}\r\n\t\t\t\t#toc_group_article {\r\n\t\t\tdisplay:none;\r\n\t\t}\r\n\t}\r\n\r\n<\/style>\r\n\r\n<!-- ToC styling  -->\r\n<style>\r\n\t\/* Simple styling for the TOC *\/\r\n\t\r\n\t#toc ul li:last-child {\r\n    padding-bottom: 16px; \/* Adjust the value as needed *\/\r\n}\r\n\r\n.td-fix-index {\r\n\t transform: unset !important;\r\n     -webkit-transform: unset !important; \r\n}\r\n.footer-contact .td-fix-index {\r\n\t transform: translateZ(0) !important;\r\n     -webkit-transform: translateZ(0) !important; \r\n}\r\n\t.tdb_single_content .tdb-block-inner.td-fix-index{\r\n\t\tposition: static;\r\n\t}\r\n\t\r\n\r\n\t\r\n#toc {\r\n  background-color: #FFF;\r\n\tpadding: 17px 24px 0px 24px !important;\r\n  margin-bottom: 20px;\r\n\/*   border: 1px solid #9C171E; *\/\r\n  border-radius: 6px;\r\n\tdisplay: none;\r\n  max-width: 100%;\r\n  transition: .4s ease height;\r\n\tmargin-left: 0;\r\n\toverflow: hidden;\r\n}\r\n\r\n#toc .header{\r\n  display: flex;\r\n  align-items: center;\r\n  justify-content: space-between;\r\n\tbackground-color: transparent;\r\n}\r\n\t\r\n\t#toc.sticky .header{\r\n\t\tpadding: 4px 0;\r\n\t}\r\n\t\r\n.header p{\r\n  font-size: 18px !important;\r\n  font-weight: 600 !important;\r\n  color: #393939;\r\n   margin-bottom: 0;\r\n  \/* margin-top: 20px; *\/\r\n}\r\n\r\n.toc-icon{\r\n  float: right;\r\n\/*   visibility: hidden; *\/\r\n}\r\n\r\n\t.toc-title{\r\n\t\tmargin-right: auto;\r\n\/* \t\tpadding-left: 20px; *\/\r\n\t\tfont-weight: 600;\r\n\t\talign-self: center;\t}\t\r\n\r\n#toc ul {\r\n  list-style-type: none;\r\n  padding-left: 0;\r\n}\r\n\t\r\n#toc.sticky ul{\r\n\toverflow-y: auto;\r\n\tmax-height: 250px;\r\n\tmargin-top: 0px;\r\n\tpadding-top: 20px;\r\n\/* \tborder-top: 1px solid #d3d3d3; *\/\r\n}\r\n\t\r\n#toc ul li {\r\n\/*   margin-bottom: 10px; *\/\r\n  margin-bottom: 10px;\r\n\tmargin-left: 0;\r\n\ttransition: .2s ease;\r\n\tcursor: pointer;\r\n}\r\n\t\r\n\t#toc.sticky ul li {\r\n\t  margin-right: 10px;\r\n\t}\r\n\t\r\n.td-post-content #toc-list li a:hover, .td-post-content #toc-list a.active{\r\n\tbackground-color: #FFF;\r\n\/* \tpadding: 8px 16px 8px 16px; *\/\r\n\tpadding: 4px 16px 4px 16px;\r\n\tborder-radius: 6px;\r\n\tcolor: #9c171e !important;\r\n\tfont-weight: 600 !important;\r\n}\r\n\t\r\n\t.td-post-content #toc-list li:hover a, .td-post-content #toc-list a.active{\r\n\t\tcolor: #9C171E !important;\r\n\t\tfont-weight: 600 !important;\r\n\t}\r\n\t\r\n.td-post-content #toc-list a.active{\r\n\tfont-weight: bold !important;\r\n\tcolor: #9C171E !important;\r\n}\r\n\t\r\n#toc a, .td-post-content #toc-list a {\r\n  text-decoration: none;\r\n  color: #ea1717 !important;\r\n  transition: .2s ease;\r\n\tfont-weight: 400 !important;\r\n\tdisplay: block;\r\n\t\r\n\tpadding: 4px 16px 4px 0;\r\n}\r\n\r\n#toc.sticky {\r\n  position: fixed;\r\n\/*   top: 73px; *\/\r\n\tbottom: 0;\r\n  z-index: 100; \r\n  box-shadow: 0 2px 5px rgba(0,0,0,0.1); \r\n\twidth: 100%; \r\n\tbackground-color: #FFF;\r\n\/* \tbackground-color: #FFF1F1; *\/\r\n\tborder-bottom: 1px solid #ea1717;\r\n\/*   border: 1px solid #393939; *\/\r\n  box-shadow: 0px 0px 14px 0px #00000040;\r\n  cursor: pointer;\r\n\tanimation: fadein .3s ease;\r\n\tpadding: 12px 16px !important;\r\n}\r\n\t\r\n\t.fadein{\r\n\t\tanimation: fadein .3s ease;\r\n\t}\r\n\t\r\n\t.fadeout{\r\n\t\tanimation: fadeout .3s ease;\r\n\t}\r\n\t\r\n\t\r\n\t@keyframes fadein{\r\n\t\t0% {\r\n\t\t\topacity: 0;\r\n\t\t}\r\n\t\t100%{\r\n\t\t\topacity: 1;\r\n\t\t}\r\n\t}\r\n\t\r\n\t@keyframes fadeout{\r\n\t\t0% {\r\n\t\t\topacity: 1;\r\n\t\t}\r\n\t\t100%{\r\n\t\t\topacity: 0;\r\n\t\t}\r\n\t}\r\n\r\n\t\r\n#toc.sticky .header p{\r\n\tmargin-bottom: 10px;\r\n\tmargin-top: 10px;\r\n}\r\n\r\n#toc.sticky .toc-icon{\r\n  visibility: visible;\r\n\/* \ttransition: 0.4s ease; *\/\r\n}\r\n\t\r\n\t.toc-icon{\r\n\t\talign-items: center;\r\n    \tdisplay: flex;\r\n\t}\r\n\t\r\n\tsvg.header-icon{\r\n\/* \t\tbackground-color: #9c171e; *\/\r\n\t\tbackground-color: #FFF;\r\n\t\tborder-radius: 30px;\r\n\t\tpadding: 5px;\r\n\t}\r\n\r\n#toc.sticky .list{\r\n\/*   max-height: 0; *\/\r\n  transition: height 0.4s ease;\r\n}\r\n\t\r\n\t#toc .list{\r\n\/*   max-height: 0; *\/\r\n  transition: height 0.4s ease;\r\n}\r\n\r\n#toc .header.active .toc-icon{\r\n\ttransform: rotate(0deg); \r\n\topacity: 1;\r\n}\r\n\r\n\t#toc .header.active + .list {\r\n\t  max-height: 200px; \/* Adjust this value as needed *\/\r\n\t  opacity: 1;\r\n\t}\r\n\t\r\n\t#placeholder-toc{\r\n\/* \t\tdisplay: none; *\/\r\n\t}\r\n\t\r\n\t@media (min-width: 768px) and (max-width: 991px){\r\n\t\t#toc.sticky{\r\n\/* \t\t\ttop: 104px; *\/\r\n\t\t\tbottom: 0px;\r\n\t\t}\r\n\t\t\r\n\t\t#toc{\r\n\t\t\twidth: unset !important;\r\n\t\t}\r\n\t}\r\n\t\r\n\t@media (max-width: 767px){\r\n\t\t#toc{\r\n\t\t\twidth: 100% !important;\r\n\t\t\tdisplay: inline-block;\r\n\t\t}\r\n\t\t\r\n\t\t#toc.sticky{\r\n\t\t\twidth: 90% !important;\r\n\/* \t\t\ttop: 81px; *\/\r\n\t\t\tbottom: 60px;\r\n\t\t\tmargin-left: auto;\r\n\t\t\tmargin-right: auto;\r\n\t\t\tpadding: 0 16px;\r\n\t\t\tright: 5%;\r\n\t\t}\r\n\t}\r\n\t\r\n\t<\/style>\r\n\r\n<!-- ToC List for mobile -->\r\n<script>\r\n \/\/ Generate TOC based on headings\r\ndocument.addEventListener(\"DOMContentLoaded\", function() {\r\n  \/\/ Get the element that will contain the TOC\r\n  const tocList = document.getElementById('toc-list');\r\n\r\n  \/\/ Get the element with the ID 'article-left'\r\n  const article = document.querySelector('.td-post-content');\r\n\r\n  \/\/ Find all h2 elements within 'myarticle'\r\n  const headers = article.getElementsByTagName('h2');\r\n\r\n  \/\/ Loop through the h2 elements and create a list item for each one\r\n  for (let i = 0; i < headers.length; i++) {\r\n    const header = headers[i];\r\n    const headerText = header.textContent;\r\n\/\/     const headerId = 'header-' + i;\r\n    const headerId = headerText\r\n    .toLowerCase()\r\n    .trim()\r\n    .replace(\/[^\\w\\s-]\/g, '')  \/\/ hapus tanda baca\r\n    .replace(\/\\s+\/g, '-'); \/\/ ganti spasi jadi \"-\"\r\n\r\n    \/\/ Set an ID for the header if it doesn't have one\r\n    header.setAttribute('id', headerId);\r\n\r\n    \/\/ Create a list item for the TOC\r\n    const listItem = document.createElement('li');\r\n\r\n    \/\/ Create a link for the list item\r\n    const link = document.createElement('a');\r\n    link.setAttribute('href', '#' + headerId);\r\n    link.textContent = headerText;\r\n\r\n    \/\/ Append the link to the list item\r\n    listItem.appendChild(link);\r\n\r\n    \/\/ Append the list item to the TOC list\r\n    tocList.appendChild(listItem);\r\n  }\r\n});\r\n\r\n\/\/ Keep height and placement of content using placeholder in place of TOC\r\ndocument.addEventListener(\"DOMContentLoaded\", function() {\r\n  const toc = document.querySelector('#toc');\r\n  const placeholderToc = document.querySelector('#placeholder-toc');\r\n\r\n  function setPlaceholderHeight() {\r\n    placeholderToc.style.height = `${toc.offsetHeight}px`;\r\n  }\r\n\r\n  \/\/ Set the initial height of the placeholder\r\n  setPlaceholderHeight();\r\n\r\n  \/\/ Update the height on window resize\r\n  window.addEventListener('resize', setPlaceholderHeight);\r\n});\r\n  const tocTitle = document.querySelector('#toc-title'); \/\/ Assuming header-faq is the element for TOC title\r\n\r\n\/\/ Sticky TOC and update heading\r\ndocument.addEventListener(\"DOMContentLoaded\", function() {\r\n  const toc = document.querySelector('#toc');\r\n  const footer = document.querySelector('.td-footer-template-wrap');\r\n  const tocParent = toc.parentElement;\r\n  const divTop = tocParent.getBoundingClientRect().top + window.pageYOffset;\r\n  const tocHeight = toc.offsetHeight;\r\n  const triggerPoint = divTop + tocHeight + 700;\r\n  const footerHeight = footer.offsetHeight;\r\n  const triggerFooterPoint = footer.getBoundingClientRect().top + window.pageYOffset - footerHeight - footerHeight - footerHeight;\r\n  const phtoc = document.querySelector('#placeholder-toc');\r\n  const headers = document.querySelectorAll('.td-post-content h2');\r\n  const navLinks = document.querySelectorAll('#toc-list a');\r\n\t\r\n\tconst panel2 = document.querySelector(\"#toc .list\");\r\n\tvar icon = document.querySelector(\".toc-icon\");\r\n\r\n  let activeLink = null; \/\/ Declare activeLink outside the loop\r\n\t\r\n  \/\/ Function to handle scroll and add\/remove .sticky class\r\n  function handleScroll() {\r\n    const windowTop = window.pageYOffset || document.documentElement.scrollTop;\r\n    let currentHeader = '';\r\n\r\n    \/\/ Highlight user progress as the heading comes\r\n    headers.forEach(header => {\r\n\t\tconst headerTop = header.offsetTop;\r\n\t\tconst headerHeight = header.clientHeight;\r\n\t\tif (window.scrollY >= (headerTop - headerHeight + 700)) {\r\n\t\t\tconst currentHeaderId = header.getAttribute('id');\r\n\t\t\tconst currentHeaderText = document.getElementById(currentHeaderId).textContent;\r\n\/\/ \t\t\tconsole.log(\"current header text:\", currentHeaderText);\r\n\t\t\ttocTitle.textContent = currentHeaderText;\r\n\t\t\tcurrentHeader = currentHeaderId;\r\n\t\t\t\r\n\t\t\tif(window.innerWidth < 767){\r\n\t\t\t\ttocTitle.textContent = 'Table of Content';\r\n\t\t\t}\r\n\t\t}\r\n\t});\r\n\r\n    navLinks.forEach(link => {\r\n      link.classList.remove('active');\r\n      if(currentHeader != '') {\r\n\t\t  if (link.getAttribute('href').includes(currentHeader)) {\r\n\t\t\t  link.classList.add('active');\r\n\t\t  }\r\n\t  }\r\n    });\r\n\/\/     if (windowTop < triggerFooterPoint) {\r\n\/\/         toc.style.display = 'block';\r\n\/\/ \t}else{\r\n\/\/         toc.style.display = 'none';\r\n\/\/ \t}\r\n    \/\/ Update TOC title if sticky\r\n    if (windowTop > triggerPoint) {\r\n      if (!toc.classList.contains('sticky')) {\r\n        phtoc.style.display = \"block\";\r\n        toc.classList.add('sticky');\r\n        toc.style.width = `${tocParent.offsetWidth}px`; \/\/ Set width to match the parent element\r\n        toc.setAttribute('style', 'width: ' + tocParent.offsetWidth + 'px !important;');\r\n        toc.style.backgroundColor = \"#FFF\";\r\n\t\tpanel2.style.height = '0px';\r\n\t\t  icon.style.transform = \"rotate(180deg)\";\r\n\t\t  if(window.innerWidth < 767){\r\n\/\/ \t\t\t  const tocs = document.querySelector('#toc.sticky');\r\n\t\t\t  tocTitle.textContent = 'Table of Content'; \/\/ Reset title\r\n       \t\t  toc.style.width = '150px'; \/\/ Set width to match the parent element\r\n\t\t  }\r\n      }\r\n      if (currentHeader) {\r\n\/\/         console.log(\"activeLink:\", activeLink);\r\n        if (activeLink) {\r\n\/\/           tocTitle.textContent = activeLink.textContent; \/\/ Update TOC title\r\n          tocTitle.textContent = activeLink ? activeLink.textContent : \"\"; \/\/ Update title only if activeLink exists\r\n        }\r\n      }\r\n    } else {\r\n      toc.classList.remove('sticky');\r\n      phtoc.style.display = \"none\";\r\n      toc.style.width = 'unset'; \/\/ Reset to original width\r\n      toc.style.backgroundColor = \"#FFF\";\r\n      tocTitle.textContent = 'Table of Content'; \/\/ Reset title\r\n\t\tpanel2.style.height = panel2.scrollHeight + \"px\";\r\n\t\ticon.style.transform = \"rotate(180deg)\";\r\n    }\r\n  }\r\n\r\n    \/\/ Attach the scroll event listener to the window\r\n    window.addEventListener('scroll', handleScroll);\r\n\r\n    \/\/ Initial call to handleScroll to set the correct state on load\r\n    handleScroll();\r\n});\r\n\t\r\n\t\/\/ Open toggle TOC\r\n\t  document.addEventListener(\"DOMContentLoaded\", function() {\r\n\t\tvar tocHeader = document.querySelector(\"#toc .header\");\r\n\t\tvar toc = document.querySelector(\"#toc\");\r\n\t\tvar icon = document.querySelector(\".toc-icon\");\r\n\t\tconst tocTitle = document.querySelector('#toc-title');\r\n\t\tconst tocs = document.querySelector('#toc.sticky');\r\n \t\tconst tocParent = toc.parentElement;\t\t  \r\n\r\n\t\t  tocHeader.addEventListener(\"click\", function() {\r\n\t\t\tvar panel = this.nextElementSibling;\r\n\t\t\tif (panel.style.height !== '0px') { \/\/ Check if height is not 0px\r\n\t\t\t  panel.style.height = '0px'; \/\/ Set height to 0 for full collapse\r\n\t\t\t  icon.style.transform = \"rotate(180deg)\";\r\n\/\/ \t\t\t\ttoc.style.paddingBottom = '6px'; \r\n\t\t\t\tif(window.innerWidth > 768){\r\n\t\t\t\t\tif(!toc.classList.contains('sticky')){\r\n\t\t\t\t\t\ttoc.style.width = \"unset\";\r\n\/\/ \t\t\t\t\t\ttoc.setAttribute('style', 'width: ' + tocParent.offsetWidth + 'px !important;');\r\n\t\t\t\t\t}\r\n\t\t\t\t\tif (toc.classList.contains('sticky')){\r\n\t\t\t\t\t\ttoc.style.width = '${tocParent.offsetWidth}px';\r\n\t\t\t\t\t\ttoc.setAttribute('style', 'width: ' + tocParent.offsetWidth + 'px !important;');\r\n\t\t\t\t\t}\r\n\t\t\t\t}\r\n\t\t\t\tif(window.innerWidth < 767){\r\n\t\t\t\t\ttoc.style.width = \"unset\"; \/\/ Reset width\r\n\t\t\t\t}\r\n\t\t\t\ttoc.style.backgroundColor = \"#FFF1F1\";\r\n\t\t\t} else {\r\n\t\t\t  panel.style.height = panel.scrollHeight + \"px\";\r\n\t\t\t  icon.style.transform = \"rotate(0deg)\";\r\n\t\t\t  toc.style.backgroundColor = \"#FFF\";\r\n\t\t\t  tocTitle.textContent = 'Table of Content'; \/\/ Reset title\r\n\t\t\t\ttoc.style.paddingBottom = '24px';\r\n\t\t\t \tif(window.innerWidth < 767){\r\n\t\t\t\t\ttoc.style.width = `${tocParent.offsetWidth}px`; \/\/ Set width to match the parent element\r\n\t\t\t\t\ttoc.setAttribute('style', 'width: ' + tocParent.offsetWidth + 'px !important;');\r\n\t\t\t\t}\r\n\t\t\t}\r\n\t\t  });\r\n\r\n\t\t  \/\/ Close TOC when a link inside it is clicked\r\n\t\t  var tocLinks = document.querySelectorAll(\"#toc .list a\");\r\n\t\t  tocLinks.forEach(function(link) {\r\n\t\t\tlink.addEventListener(\"click\", function() {\r\n\t\t\t  var panel = document.querySelector(\"#toc .list\");\r\n\t\t\t  panel.style.height = '0px'; \/\/ Set height to 0 for full collapse\r\n\t\t\t  icon.style.transform = \"rotate(180deg)\";\r\n\t\t\t  toc.style.backgroundColor = \"#FFF\";\r\n\t\t\t});\r\n\t\t  });\r\n\t\t});\r\n\r\n\r\n\r\n\t\r\n\/\/ \tmake the heading at the center of the viewport\r\n\/\/ \tdocument.addEventListener('DOMContentLoaded', function() {\r\n\/\/     \/\/ Add click event listener to all links in the TOC list\r\n\/\/     document.querySelectorAll('#toc-list a').forEach(anchor => {\r\n\/\/         anchor.addEventListener('click', function (e) {\r\n\/\/             e.preventDefault(); \/\/ Prevent the default behavior of jumping to the anchor\r\n\/\/ \/\/ \t\t\tconsole.log(\"prevent default\");\r\n\/\/             const targetId = this.getAttribute('href').substring(1); \/\/ Get the ID of the target element\r\n\/\/             const targetElement = document.getElementById(targetId); \/\/ Get the target element\r\n\r\n\/\/             if (targetElement) {\r\n\/\/                 const headerHeight = document.querySelector('#toc .header').offsetHeight; \/\/ Get the height of the fixed header\r\n\/\/                 const windowHeight = window.innerHeight; \/\/ Get the height of the viewport\r\n\/\/                 const targetOffset = targetElement.offsetTop; \/\/ Get the top offset of the target element\r\n\/\/                 const scrollTo = targetOffset + (windowHeight \/ 2) + (headerHeight); \/\/ Calculate the scroll position to center the target element\r\n\r\n\/\/                 \/\/ Scroll to the calculated position smoothly\r\n\/\/                 window.scrollTo({\r\n\/\/                     top: scrollTo,\r\n\/\/                     behavior: 'smooth'\r\n\/\/                 });\r\n\/\/             }\r\n\/\/         });\r\n\/\/     });\r\n\/\/ });\r\n<\/script>\r\n\r\n<!-- START script lama -->\r\n<!-- <script>\r\n\/\/ \tvar pilihDaftarIsi = document.getElementById('pilihDaftarIsi');\r\n\t\r\n\/\/ \tdocument.addEventListener('DOMContentLoaded', function() {\r\n\/\/ \t\tvar dropdownFixedTop = document.querySelector('.dropdown-fixed-top');\r\n\r\n\/\/ \t\tdropdownFixedTop.addEventListener('click', function() {\r\n\/\/ \t\t\tvar dropdownContent = this.querySelector('.list_toc');\r\n\/\/ \t\t\tdropdownContent.classList.toggle('show');\r\n\/\/ \t\t});\r\n\r\n\/\/ \t\twindow.addEventListener('click', function(event) {\r\n\/\/ \t\t\tvar listTocTop = document.getElementById('list_toc_top');\r\n\r\n\/\/ \t\t\tif (!dropdownFixedTop.contains(event.target)) {\r\n\/\/ \t\t\t\tlistTocTop.classList.remove('show');\r\n\/\/ \t\t\t}\r\n\/\/ \t\t});\r\n\/\/ \t});\r\n\t\r\n\/\/ \tvar daftarIsiContainer = document.getElementById('toc_group_article');\r\n\/\/ \tvar dropdownFixedTop = document.getElementById('dropdown-fixed-top');\r\n\/\/     var triggered = false; \/\/ Flag to keep track of whether the function has been triggered\r\n\r\n\/\/     window.addEventListener('scroll', function() {\r\n\/\/         if (!triggered && isCompletelyScrolledPast(daftarIsiContainer)) {\r\n\/\/             showSectionDropdownFixedTop(false);\r\n\/\/             triggered = true;\r\n\/\/         } else if (triggered && !isCompletelyScrolledPast(daftarIsiContainer)) {\r\n\/\/             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null;\r\n\r\n    const tocItems = document.querySelectorAll(`.${tocClass} li`);\r\n    tocItems.forEach(item => {\r\n      const a = item.querySelector('a');\r\n      if (!a) return;\r\n      const href = a.getAttribute('href');\r\n      const targetId = href.substring(1); \/\/ Remove the '#' from the href to get the target ID\r\n      const targetElement = document.getElementById(targetId);\r\n      if (!targetElement) return;\r\n\r\n      const targetTop = targetElement.getBoundingClientRect().top + scrollPosition;\r\n      const nextItem = item.nextElementSibling;\r\n      const nextTop = nextItem ? nextItem.getBoundingClientRect().top + scrollPosition : Infinity;\r\n\r\n      if (targetTop <= scrollPosition + 150) {\r\n        if (a.parentElement.parentElement === tocItems) {\r\n          \/\/ The h2 heading is at the root level of the TOC\r\n          activeH2 = { id: targetId, level: 'h2' };\r\n        } else {\r\n          \/\/ The h3 heading is nested under an h2 heading\r\n    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document.querySelectorAll(`.${tocClass} li`);\r\n    tocItems.forEach(item => {\r\n      const a = item.querySelector('a');\r\n      if (!a) return;\r\n      const href = a.getAttribute('href');\r\n      const targetId = href.substring(1); \/\/ Remove the '#' from the href to get the target ID\r\n      const targetElement = document.getElementById(targetId);\r\n      if (!targetElement) return;\r\n\r\n      const targetTop = targetElement.getBoundingClientRect().top + scrollPosition;\r\n      const nextItem = item.nextElementSibling;\r\n      const nextTop = nextItem ? nextItem.getBoundingClientRect().top + scrollPosition : Infinity;\r\n\r\n      if (targetTop <= scrollPosition + 150) {\r\n        if (a.parentElement.parentElement === tocItems) {\r\n          \/\/ The h2 heading is at the root level of the TOC\r\n          activeH2 = { id: targetId, level: 'h2' };\r\n        } else {\r\n          \/\/ The h3 heading is nested under an h2 heading\r\n          const parentH2 = a.parentElement.parentElement.previousElementSibling;\r\n          if (parentH2) {\r\n            const h2Link = parentH2.querySelector('a');\r\n            if (h2Link) {\r\n              const h2Href = h2Link.getAttribute('href');\r\n              const h2Id = h2Href.substring(1);\r\n              activeH2 = { id: h2Id, level: 'h2' };\r\n            }\r\n          }\r\n          activeH3 = { id: targetId, level: 'h3' };\r\n        }\r\n      }\r\n\r\n      if (targetTop > scrollPosition + 150 && nextTop > scrollPosition + 150 && !activeH3) {\r\n        \/\/ Reset the activeH2 when there are no more active h3 headings\r\n        activeH2 = null;\r\n      }\r\n    });\r\n\r\n    \/\/ Update the active state for the TOC items\r\n    tocItems.forEach(item => {\r\n      item.classList.remove('active');\r\n      const a = item.querySelector('a');\r\n      if (a) {\r\n        const href = a.getAttribute('href');\r\n        const targetId = href.substring(1);\r\n        if ((activeH2 && activeH2.id === targetId) || (activeH3 && activeH3.id === targetId)) {\r\n          item.classList.add('active');\r\n        }\r\n      }\r\n    });\r\n  }\r\n\r\n  \/\/ Call scrollSpy for each TOC on window scroll\r\n  const tocClasses = ['list_toc', 'list_toc_float']; \/\/ Add other TOC class names here if you have more than two instances\r\n  tocClasses.forEach(tocClass => {\r\n    window.addEventListener('scroll', () => scrollSpy(tocClass));\r\n  });\r\n<\/script>\r\n\t\r\n\r\n<!-- ToC List for desktop side bar, diganti jadi inject by php, di code snippet \"Sidebar Accordion\" -->\r\n<!--  <script>\r\n\tdocument.addEventListener(\"DOMContentLoaded\", function() {\r\nToC List for desktop side bar, diganti jadi inject by php, di code snippet \"Sidebar Accordion\"\r\n        Fungsi untuk mengubah teks menjadi format id\r\n        function formatId(text) {\r\n            return text.trim().replace(\/[^\\w\\d]+\/g, '_');\r\n        }\r\n\r\n        \/\/ Fungsi untuk membuat nested list\r\n        function createNestedList(parentNode, children) {\r\n            if (children.length === 0) return;\r\n\r\n            const nestedUl = document.createElement('ul');\r\n            children.forEach(child => {\r\n                const nestedLi = document.createElement('li');\r\n                const nestedA = document.createElement('a');\r\n                nestedA.textContent = child.title;\r\n                nestedA.href = `#${child.id}`;\r\n                nestedLi.appendChild(nestedA);\r\n                nestedUl.appendChild(nestedLi);\r\n\r\n                if (child.children.length > 0) {\r\n                    createNestedList(nestedLi, child.children);\r\n                }\r\n            });\r\n\r\n            parentNode.appendChild(nestedUl);\r\n        }\r\n\r\n        \/\/ Membuat objek untuk menyimpan daftar h2 dan h3 beserta judulnya\r\n        const headings = [];\r\n\r\n           \/\/ Mengambil semua elemen h2 dan h3\r\n        const elements = document.querySelectorAll('.td-post-content h2');\r\n\t\t\t\/\/, .td-post-content h3\r\n\r\n        elements.forEach(element => {\r\n            if (element.tagName === 'H2') {\r\n                const id = formatId(element.textContent);\r\n                element.id = id;\r\n\t\t\t\tif (element.textContent.toLowerCase() === \"key takeaways\") {return;} \/\/ Kalau Key Takeaways, jangan dimasukin\r\n                headings.push({ level: 'h2', id: id, title: element.textContent, children: [] });\r\n            } else if (element.tagName === 'H3') {\r\n                const id = formatId(element.textContent);\r\n                element.id = id;\r\n                if (headings.length > 0) {\r\n                    headings[headings.length - 1].children.push({ level: 'h3', id: id, title: element.textContent, children: [] });\r\n                }\r\n            }\r\n        });\r\n\r\n        \/\/ Membuat list HTML dari objek headings\r\n        const ul = document.getElementById('list_toc');\r\n        let currentUl = ul;\r\n        headings.forEach(heading => {\r\n            const li = document.createElement('li');\r\n            const a = document.createElement('a');\r\n            a.textContent = heading.title;\r\n            a.href = `#${heading.id}`;\r\n            li.appendChild(a);\r\n\r\n            if (heading.level === 'h2') {\r\n                \/\/ Menyimpan ul saat ini untuk menambahkan nested ul\r\n                currentUl = li;\r\n                ul.appendChild(li);\r\n            } else if (heading.level === 'h3') {\r\n                if (!currentUl.lastElementChild || currentUl.lastElementChild.tagName !== 'UL') {\r\n                    \/\/ Jika belum ada nested ul, buat satu\r\n                    const nestedUl = document.createElement('ul');\r\n                    currentUl.appendChild(nestedUl);\r\n                    currentUl = nestedUl;\r\n                }\r\n                currentUl.appendChild(li);\r\n            }\r\n\r\n            createNestedList(li, heading.children);\r\n        });\r\n\t\tDapatkan elemen ul dengan id 'list_toc_float'\r\nconst ulFloat = document.getElementById('list_toc');\r\nconst ulJourney = document.getElementById('list_journey');\r\n\r\nDapatkan isi (child elements) dari ul dengan id 'list_toc_float'\r\n\tif (ulFloat !== null) {\r\n\t\tconst clonedChildren = ulFloat.cloneNode(true).children;\r\n\t\tconst ulToc = document.getElementById('list_toc_float');\r\n\t\tconst ulTocTop = document.getElementById('list_toc_top');\r\n\t\tif ((ulToc !== null || ulToc !== undefined) && window.innerWidth > 1018){\r\n\t\t\tulToc.append(...clonedChildren);\r\n\t\t} else {\r\n\t\t\tulTocTop.append(...clonedChildren);\r\n\t\t}\r\n\t} \r\n\r\n\tif (ulJourney !== null) {\r\n\t\tconst clonedChildrenJourney = ulJourney.cloneNode(true).children;\r\n\t\tconst ulTocJourney = document.getElementById('list_toc_journey');\r\n\t\tulTocJourney.append(...clonedChildrenJourney);\r\n\t} \r\n\t\r\n        Fungsi untuk mengambil tinggi navbar\r\n        function getNavbarHeight() {\r\n            const navbar = document.getElementById('tdi_34');\r\n            return navbar ? navbar.offsetHeight : 0;\r\n        }\r\n\r\n        \/\/ Fungsi untuk menambahkan offset posisi scroll\r\n        function scrollToElementWithOffset(elementId) {\r\n            const element = document.getElementById(elementId);\r\n            if (element) {\r\n                const offset = getNavbarHeight();\r\n                const elementPosition = element.getBoundingClientRect().top;\r\n                const offsetPosition = elementPosition - offset-40;\r\n\r\n                window.scrollBy({\r\n                    top: offsetPosition,\r\n                    behavior: 'smooth'\r\n                });\r\n            }\r\n        }\r\n\r\n        \/\/ Fungsi untuk menangani klik pada tautan judul\r\n        function handleTitleClick(event) {\r\n            event.preventDefault();\r\n            const href = event.target.getAttribute('href').substr(1);\r\n            scrollToElementWithOffset(href);\r\n        }\r\n\r\n        \/\/ Tambahkan event listener untuk semua tautan judul\r\n        const titleLinks = document.querySelectorAll('a[href^=\"#\"]');\r\n        titleLinks.forEach(link => {\r\n            link.addEventListener('click', handleTitleClick);\r\n        });\r\n\t});\r\n    <\/script> -->\r\n<\/p>\n<h2><b>What is Legacy System Integration?<\/b><\/h2>\n<p>Legacy system integration means connecting older on-site software and systems with modern cloud apps and digital technologies. Depending on the legacy system\u2019s functions, this connection can be done through APIs, database connectors, iPaaS platforms, or file transfers.<\/p>\n<p>The main purpose of this integration is to link legacy and modern systems without moving all your data into a new platform. This way, businesses can adopt digital innovation while avoiding the risks that usually come with full data migration.<\/p>\n<h2><b>Business Challenges with Legacy Systems<\/b><\/h2>\n<p>Staying with just the legacy systems as others move on to newer systems will pose some risks for your business. Before we move on to the types of integration, let\u2019s take a look at the challenges of staying with outdated systems:<\/p>\n<ul>\n<li aria-level=\"1\"><b>Legacy systems require costly maintenance:<\/b> Older tools need more upkeep as parts become rare and fewer experts support them.<\/li>\n<li aria-level=\"1\"><b>Outdated software creates security risks:<\/b> Lack of updates and patches exposes systems to cyber threats and legal non-compliance.<\/li>\n<li aria-level=\"1\"><b>Old systems can\u2019t integrate with modern tools:<\/b> They don\u2019t support cloud apps, automation, or analytics, which limits innovation.<\/li>\n<li aria-level=\"1\"><b>Legacy infrastructure cannot scale easily:<\/b> It struggles to handle business growth, high data volume, and new digital demands.<\/li>\n<li aria-level=\"1\"><b>Manual processes slow down operations:<\/b> Outdated interfaces reduce employee productivity and increase the chance of human error.<\/li>\n<li aria-level=\"1\"><b>System failure becomes more likely over time:<\/b> Aging hardware and unsupported software can<a href=\"https:\/\/www.hashmicro.com\/blog\/erp-security-moves\/\"> cause downtime<\/a> and data loss.<\/li>\n<\/ul>\n<h2><b>Types of Legacy System Integration<\/b><\/h2>\n<p>There are three main methods for integrating legacy systems with newer applications:<\/p>\n<h3><b>1. Service Layers<\/b><\/h3>\n<p>This method adds a new layer on top of the existing system. It transforms data from the legacy system so it can be used by the new system, and vice versa. Data from the new system is also adjusted to be compatible with the old one.<\/p>\n<p>This is one of the most commonly used approaches for legacy integration.<\/p>\n<h3><b>2. Data Access Layers (DAL)<\/b><\/h3>\n<p>Instead of adding a service layer, this method involves creating a new database structure. It duplicates the legacy system\u2019s data but uses a more modern data architecture. This makes the data easier to work with in new systems.<\/p>\n<h3><b>3. APIs (Application Programming Interfaces)<\/b><\/h3>\n<p>APIs are a highly flexible solution for integration. They expose specific parts of the legacy system so that newer applications can interact with it. APIs are especially useful if you plan to connect the legacy system to multiple services in the future, so a custom API is a strong long-term option.<\/p>\n<h2><b>Benefits of Legacy System Integration<\/b><\/h2>\n<p><a href=\"https:\/\/www.hashmicro.com\/blog\/wp-content\/uploads\/2025\/08\/person-looking-cloud-1.webp\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-large wp-image-75068\" src=\"https:\/\/www.hashmicro.com\/blog\/wp-content\/uploads\/2025\/08\/person-looking-cloud-1-1024x576.webp\" alt=\"what is legacy system integration\" width=\"696\" height=\"392\" srcset=\"https:\/\/www.hashmicro.com\/blog\/wp-content\/uploads\/2025\/08\/person-looking-cloud-1-1024x576.webp 1024w, https:\/\/www.hashmicro.com\/blog\/wp-content\/uploads\/2025\/08\/person-looking-cloud-1-300x169.webp 300w, https:\/\/www.hashmicro.com\/blog\/wp-content\/uploads\/2025\/08\/person-looking-cloud-1-768x432.webp 768w, https:\/\/www.hashmicro.com\/blog\/wp-content\/uploads\/2025\/08\/person-looking-cloud-1-747x420.webp 747w, https:\/\/www.hashmicro.com\/blog\/wp-content\/uploads\/2025\/08\/person-looking-cloud-1-150x84.webp 150w, https:\/\/www.hashmicro.com\/blog\/wp-content\/uploads\/2025\/08\/person-looking-cloud-1-696x392.webp 696w, https:\/\/www.hashmicro.com\/blog\/wp-content\/uploads\/2025\/08\/person-looking-cloud-1-1068x601.webp 1068w, https:\/\/www.hashmicro.com\/blog\/wp-content\/uploads\/2025\/08\/person-looking-cloud-1.webp 1200w\" sizes=\"auto, (max-width: 696px) 100vw, 696px\" \/><\/a><\/p>\n<p>Here are six benefits of legacy system integration that you should know:<\/p>\n<h3><b>1. Operational efficiency<\/b><\/h3>\n<p>The primary reason for integrating with a legacy application is to boost operational efficiency. Without integration, employees may need to transfer data manually, which wastes time, slows down processes, and increases the risk of data errors.<\/p>\n<h3><b>2. Utilize existing data<\/b><\/h3>\n<p>Many reports in legacy BI systems go unused. So, if the companies choose to integrate them with existing systems instead of discarding them, they can still make use of reports, analytics, customer data, and more.<\/p>\n<h3><b>3. Access to modern functionality<\/b><\/h3>\n<p>Many organizations link new services to their legacy systems because they want the additional features these services offer. This could include modern BI dashboards that are easier to share across departments, upgraded people management tools, or other advanced capabilities.<\/p>\n<h3><b>4. Better user experiences<\/b><\/h3>\n<p>Delivering modern user experiences often requires connecting SaaS applications to legacy systems. For instance, a local retailer managing hundreds of products may need to link their outdated inventory system with an ecommerce platform like BigCommerce to move sales online.<\/p>\n<h3><b>5. Faster implementation of new solutions<\/b><\/h3>\n<p>System integration makes it possible to adopt new technologies faster than performing a full modernization of the legacy application. Ideally, businesses can also build an API for their legacy system to speed up future solution implementations.<\/p>\n<h3><b>6. Avoiding complete modernization<\/b><\/h3>\n<p>By integrating with legacy systems, companies can sidestep the need for a total rebuild. They can depend on third-party tools for new features, higher efficiency, and improved experiences, without having to reconstruct their core business system from the ground up.<\/p>\n<h2><b>Challenges of Integrating Legacy Systems<\/b><\/h2>\n<p>Although integration projects bring many benefits, they also come with serious pitfalls. The following challenges may arise, making system rebuilding with modern frameworks a more suitable choice.<\/p>\n<h3><b>1. Lack of necessary skills<\/b><\/h3>\n<p>Your internal team may not have the right expertise to handle integration with a legacy system. In some cases, the time required to complete the integration may even exceed the effort needed to modernize the system and then connect new products or services.<\/p>\n<h3><b>2. Lack of documentation<\/b><\/h3>\n<p>How long ago was your legacy system created? Does your team still have detailed documentation available? Has the knowledge been properly preserved and passed down? Missing documentation can severely jeopardize the success of an integration project.<\/p>\n<h3><b>3. Outdated architecture<\/b><\/h3>\n<p>Not all monolithic architectures are failures; sometimes they are less complex than microservices. However, your architecture is outdated if it\u2019s difficult for developers to maintain, leads to messy code, and requires time-consuming reviews.<\/p>\n<p>If this applies to your system, integration will only become more difficult.<\/p>\n<h3><b>4. Cybersecurity issues<\/b><\/h3>\n<p>Linking two different systems introduces new vulnerabilities. Without the proper cybersecurity expertise, you may fail to detect, test, or prevent these security risks.<\/p>\n<h3><b>5. Project speed<\/b><\/h3>\n<p>All of these issues can slow the progress of an integration project. If the process drags on too long, it may ultimately be more effective to modernize the system instead.<\/p>\n<div style=\"background-color: #fffacd; border: 2px solid #990000; border-radius: 12px; padding: 24px 20px; max-width: 500px; margin: 40px auto; font-family: Arial, sans-serif; box-shadow: 0 4px 10px rgba(0,0,0,0.1); text-align: center;\">\n<p style=\"font-size: 18px; font-weight: bold; color: #990000; margin-bottom: 12px;\">If you\u2019re thinking about modernizing your system, why don\u2019t you start with HashMicro?<\/p>\n<p style=\"font-size: 15px; color: #4d0000; margin-bottom: 20px; line-height: 1.6;\">It can integrate with your existing system, so there\u2019s no need to rebuild from scratch. Additionally, if you really need to migrate your data completely, our expert team will ensure no data is left behind.<\/p>\n<p><a style=\"display: inline-block; padding: 12px 24px; background-color: #990000; color: #ffffff; font-size: 15px; font-weight: bold; border-radius: 6px; text-decoration: none; transition: background-color 0.3s ease;\" href=\"https:\/\/www.hashmicro.com\/free-product-tour\/\">Click for Free Demo!<\/a><\/p>\n<\/div>\n<h2><b>Integrating Legacy Systems vs. Changing Systems<\/b><\/h2>\n<p>Deciding whether to integrate or rebuild your legacy system requires assessing how outdated your current system really is.<\/p>\n<h3><b>1. Cost of maintenance versus cost of change<\/b><\/h3>\n<p>How much does it cost to keep your legacy system running? Maintenance often consumes <a href=\"https:\/\/www.mechanical-orchard.com\/insights\/1-14-trillion-to-keep-the-lights-on-legacys-drag-on-productivity\">60\u201380% of IT budgets<\/a>. Comparing these ongoing expenses with the cost of rebuilding may give you the clarity you need.<\/p>\n<p>Ask yourself if it\u2019s worth continuing to pay for legacy maintenance in the long run.<\/p>\n<h3><b>2. Business roadmap and technology constraints<\/b><\/h3>\n<p>What direction is your company headed in the coming years? How much is your legacy system holding you back from achieving those goals? If the impact is limited and manageable, integration could be sufficient.<\/p>\n<p>If not, full modernization may be the smarter way to cut costs and accelerate future innovation.<\/p>\n<h3><b>3. Documentation<\/b><\/h3>\n<p>How complete is the documentation for your system? When employees ask questions, do you rely on manuals or on individuals with institutional knowledge? Strong documentation is essential.<\/p>\n<p>If it\u2019s missing, rebuilding may be the safest way to ensure proper documentation is created and preserved.<\/p>\n<h3><b>4. Cybersecurity<\/b><\/h3>\n<p>Do you have the right resources to detect, test, and prevent vulnerabilities created by integration? If the answer is uncertain, integrating your ERP legacy system may pose risks, though integrating smaller systems like CRM might be less critical.<\/p>\n<p>Always consider the sensitivity of your data and the <a href=\"https:\/\/www.hashmicro.com\/blog\/cybersecurity-small-websites\/\">strength of your cybersecurity<\/a> when deciding between integration and rebuilding.<\/p>\n<p>The choice between integration or modernization (followed by integration) can greatly affect both your budget and risk management. Treat the decision carefully and thoroughly evaluate every option before moving forward.<\/p>\n<h2><b>How to Integrate Legacy Systems<\/b><\/h2>\n<p>Here are the steps for integrating legacy systems:<\/p>\n<h3><b>1. Clarify the purpose and requirements of the integration<\/b><\/h3>\n<p>Clear objectives are critical for successful legacy integration. The first step is to discuss and document exactly what you want to achieve.<\/p>\n<p>Points to consider in these discussions include:<\/p>\n<ul>\n<li aria-level=\"1\">Does the integration need two-way data transfer?<\/li>\n<li aria-level=\"1\">Which database calls are essential?<\/li>\n<li aria-level=\"1\">How should the data be transformed?<\/li>\n<\/ul>\n<p>It\u2019s also important to involve representatives from every team that interacts with the system. This ensures you capture the full scope of needs and requirements. Finally, secure internal agreement before moving forward.<\/p>\n<h3><b>2. Assess the legacy system\u2019s capabilities for integration<\/b><\/h3>\n<p>Next, review the legacy system thoroughly, including its data architecture, code, and user experience.<\/p>\n<p>The purpose of this review is to identify what\u2019s possible. With this understanding, you can compare the system\u2019s capabilities to your integration requirements.<\/p>\n<p>From the evaluation, you may find it feasible to build a custom API within a month. Or, you might discover integration is too complex, making modernization a necessary first step. Either way, this assessment provides the insights needed for sound decision-making.<\/p>\n<h3><b>3. Research potential resources and solution providers<\/b><\/h3>\n<p>Before starting the integration (or modernization), take time to research available resources. You may find that some of the heavy lifting has already been done for you.<\/p>\n<h3><b>4. Choose the type of integration and execute it<\/b><\/h3>\n<p>At this point, you know your requirements, the system\u2019s capabilities, and what resources exist. Use this information to decide on the integration approach. Whether that\u2019s building a custom API, linking it with an iPaaS, creating a data access layer, or combining methods.<\/p>\n<p>Assign a dedicated product manager if you haven\u2019t already. With so many moving parts, strong coordination is vital. Without a manager, all your preparation could fall apart during execution. Also, ensure everything is well documented.<\/p>\n<h3><b>5. Test the integration and plan for long-term maintenance<\/b><\/h3>\n<p>The final step is to launch and test the integration. This includes:<\/p>\n<ul>\n<li aria-level=\"1\"><b>Functional testing:<\/b> Does the integration work as intended?<\/li>\n<li aria-level=\"1\"><b>Performance testing:<\/b> Can it handle the expected workload?<\/li>\n<li aria-level=\"1\"><b>Penetration testing:<\/b> Are there protections against exploits and vulnerabilities?<\/li>\n<li aria-level=\"1\"><b>Vulnerability scanning:<\/b> Are weak points in the system identified?<\/li>\n<\/ul>\n<p>Plan how you will continue to test for both quality and security in the future. And don\u2019t forget to document the entire process.<\/p>\n<h2><b>Types of Integration Platforms for Legacy System Integration<\/b><\/h2>\n<p>Here are the main ways an integration platform helps connect legacy systems with modern applications:<\/p>\n<ul>\n<li aria-level=\"1\"><b>APIs (Application Programming Interfaces):<\/b> APIs wrap around legacy systems so they can talk to modern applications without altering the original code. They make it possible to exchange data and connect functions smoothly.<\/li>\n<li aria-level=\"1\"><b>Middleware for application integration:<\/b> Middleware acts as a middle layer that allows different systems to share data and communicate through multiple protocols and formats. It makes it easier for legacy systems to work with modern applications.<\/li>\n<li aria-level=\"1\"><b>Enterprise Service Bus (ESB):<\/b> An ESB serves as a central hub that links multiple systems and applications. It standardizes communication and handles data transformation between old and new systems.<\/li>\n<li aria-level=\"1\"><b>Data integration:<\/b> ETL (extract, transform, load) tools move data from legacy systems into data warehouses or modern databases. This ensures that information from older systems remains accessible for reporting and analysis.<\/li>\n<li aria-level=\"1\"><b>Service-oriented architecture (SOA):<\/b> SOA breaks down business functions into individual services that different applications can reuse. Legacy systems can be integrated by exposing their functions as services under this model.<\/li>\n<\/ul>\n<h2><b>Conclusion<\/b><\/h2>\n<p>Many businesses hesitate to replace their legacy systems all at once, and that\u2019s completely understandable. Rebuilding from scratch often feels risky, expensive, and time-consuming. Instead of forcing a disruptive change, companies can start by integrating their existing systems with modern applications.<\/p>\n<p>Integration gives you the best of both worlds: your current systems continue to run while your teams gain access to cloud tools, advanced analytics, and more user-friendly features. This way, you enjoy the benefits of digital transformation without putting daily operations at risk.<\/p>\n<p>With <a href=\"https:\/\/www.hashmicro.com\/erp-system\">HashMicro ERP<\/a>, you can integrate legacy systems today and gradually transition into a unified platform when the time is right. It\u2019s a flexible, future-ready approach that lets you modernize at your own pace; no disruption, no pressure, just steady progress toward innovation.<\/p>\n<p>If you\u2019re interested in integrating your legacy system with HashMicro and want a demonstration first, sign up for a <a href=\"https:\/\/www.hashmicro.com\/free-product-tour\/\">free demo<\/a> now, and contact our expert team!<\/p>\n<a href=\"https:\/\/www.hashmicro.com\/erp-system?medium=moneysite-banner\" target=\"_blank\"><img decoding=\"async\" loading=\"lazy\" width=\"712\" src=\"https:\/\/www.hashmicro.com\/blog\/wp-content\/uploads\/2025\/06\/ERP.webp\" alt=\"ERP\"><\/a>\n","protected":false},"excerpt":{"rendered":"<p>A legacy system is older software or infrastructure that a company still uses for daily operations, even if newer technologies exist. These systems often hold critical data and processes, so they\u2019re hard to fully replace. Even if one wants to replace it, there are so many obstacles to do so. However, legacy systems usually cannot [&hellip;]<\/p>\n","protected":false},"author":206,"featured_media":75067,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[5],"tags":[],"class_list":{"0":"post-75066","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-erp"},"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.6 (Yoast SEO v26.6) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>A Comprehensive Guide to Legacy System Integration<\/title>\n<meta name=\"description\" content=\"Legacy system integration is connecting older software and infrastructure with modern applications to enable data exchange.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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