{"id":13078,"date":"2026-04-27T10:10:42","date_gmt":"2026-04-27T08:10:42","guid":{"rendered":"https:\/\/flyingsupporter.ch\/?p=13078"},"modified":"2026-04-27T11:33:07","modified_gmt":"2026-04-27T09:33:07","slug":"legacy-it-why-old-systems-become-a-real-problem","status":"publish","type":"post","link":"https:\/\/flyingsupporter.ch\/en\/2026\/04\/27\/legacy-it-warum-alte-systeme-zum-echten-problem-werden\/","title":{"rendered":"Legacy IT: Why old systems are becoming a real problem"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"13078\" class=\"elementor elementor-13078\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-52adb76 e-flex e-con-boxed e-con e-parent\" data-id=\"52adb76\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-68f15df e-con-full e-flex e-con e-child\" data-id=\"68f15df\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-44cba34 e-con-full e-flex e-con e-child\" data-id=\"44cba34\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-48725cb elementor-widget__width-inherit elementor-widget elementor-widget-text-editor\" data-id=\"48725cb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>In many companies, a large part of the IT runs on systems that should have been replaced long ago. This so-called legacy IT is not a marginal phenomenon, but often the backbone of critical processes - from accounting to production. This is precisely where the problem lies.<br \/><br \/><\/strong><\/p><h4>What does Legacy IT mean in concrete terms?<\/h4><p>The term describes old software and hardware that is still in use even though it is technically obsolete. This can be:<\/p><ul><li>self-developed applications from the 90s<\/li><li>Old databases without modern support<\/li><li>Operating systems without security updates<\/li><li>Specialised software that has never been replaced<\/li><\/ul><p><br \/>These systems often still work - but only just.<\/p><p>\u00a0<\/p><h4>Why companies stick to it<\/h4><p>It seems irrational to continue operating old systems. In practice, there are clear reasons for this:<\/p><ol><li><strong>Dependence on critical processes<\/strong><br \/>Many core functions run exclusively on these systems. A failure would have a direct impact on the business.<\/li><li><strong>High conversion costs<\/strong><br \/>A migration not only means new software, but also training, adaptation of processes and possible downtimes.<\/li><li><strong>Lack of knowledge<\/strong><br \/>Often nobody knows exactly how the system works internally. Documentation is missing, developers are no longer available.<\/li><\/ol><p>\u00a0<\/p><h4>The real problems start in the background<\/h4><p>Legacy IT is not just \u00abold\u00bb - it creates concrete risks:<\/p><p><strong>Security gaps<\/strong><br \/>Without updates, attack surfaces are created. Known vulnerabilities remain open.<\/p><p><strong>Incompatibility<\/strong><br \/>New systems are difficult to connect. Interfaces are missing or unstable.<\/p><p><strong>High maintenance costs<\/strong><br \/>Spare parts are difficult to obtain and specialised knowledge is expensive.<\/p><p><strong>Low flexibility<\/strong><br \/>Adjustments take a long time or are not possible at all.<\/p><p>\u00a0<\/p><h4>When old systems block new projects<\/h4><p>A central problem: Legacy IT prevents innovation.<\/p><p>Modern approaches such as cloud, automation or AI often cannot be integrated. Companies are then faced with a conflict of objectives:<\/p><ul><li>either modernise and take risks<\/li><li>or remain stable and lose competitiveness<\/li><\/ul><p><br \/>Many choose to stand still - and pay the price in the long term.<\/p><p>\u00a0<\/p><h4>Typical strategies for dealing with legacy IT<\/h4><p>Complete replacement is rarely possible immediately. This is why interim solutions are created:<\/p><p><strong>Step-by-step modernisation<\/strong><br \/>Parts of the system are gradually being replaced.<\/p><p><strong>Building interfaces<\/strong><br \/>Old systems are connected via APIs without changing them directly.<\/p><p><strong>Parallel operation<\/strong><br \/>New and old systems run simultaneously - often for years.<\/p><p>None of these solutions is perfect. They shift the problem rather than solving it.<\/p><p>\u00a0<\/p><p><strong>Legacy IT is not a technical detail, but a structural risk. Systems that used to provide stability are now becoming a brake pad.<\/strong><\/p><p><strong>The real challenge lies not in replacing the technology, but in dealing with dependencies, knowledge and costs. Those who ignore this will remain capable of acting - but only in the short term.<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5e20699 elementor-blockquote--skin-boxed elementor-blockquote--align-center elementor-widget elementor-widget-blockquote\" data-id=\"5e20699\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"blockquote.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<blockquote class=\"elementor-blockquote\">\n\t\t\t<p class=\"elementor-blockquote__content\">\n\t\t\t\t<b>Your partner for hardware and software - Flying Supporter<br><br><\/b> <b><a href=\"https:\/\/flyingsupporter.ch\/en\/contact-team\/#form\">Do you have any questions<\/a>?<\/b>\n<br>We will be happy to help you.\t\t\t<\/p>\n\t\t\t\t\t<\/blockquote>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-605597d elementor-align-center elementor-widget elementor-widget-button\" data-id=\"605597d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/flyingsupporter.ch\/en\/contact-team\/#form\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Get in touch now<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>In many companies, a large part of the IT runs on systems that should have been replaced long ago. This so-called legacy IT is not a marginal phenomenon, but often the backbone of critical processes - from accounting to production. This is precisely where the problem lies.<\/p>","protected":false},"author":30,"featured_media":13079,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"page_builder":"","footnotes":""},"categories":[95,74,77,73],"tags":[],"post_folder":[138],"class_list":["post-13078","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-empfehlungen","category-news","category-sicherheit","category-technik"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"In vielen Unternehmen l\u00e4uft ein grosser Teil der IT auf Systemen, die eigentlich l\u00e4ngst ersetzt werden m\u00fcssten. 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