{"id":7099,"date":"2026-02-09T09:00:08","date_gmt":"2026-02-09T08:00:08","guid":{"rendered":"https:\/\/jc-advisory.lu\/core-banking-system-the-heart-of-banking-in-the-age-of-modernization\/"},"modified":"2026-02-09T13:41:47","modified_gmt":"2026-02-09T12:41:47","slug":"core-banking-system-the-heart-of-banking-in-the-age-of-modernization","status":"publish","type":"post","link":"https:\/\/jc-advisory.lu\/fr\/core-banking-system-the-heart-of-banking-in-the-age-of-modernization\/","title":{"rendered":"Core Banking System: The Heart of Banking in the Age of Modernization"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"7099\" class=\"elementor elementor-7099 elementor-7077\">\n\t\t\t\t<div class=\"elementor-element elementor-element-27f321cb e-flex e-con-boxed e-con e-parent\" data-id=\"27f321cb\" data-element_type=\"container\" data-e-type=\"container\">\r\n\t\t\t\t\t<div class=\"e-con-inner\">\r\n\t\t\t\t<div class=\"elementor-element elementor-element-04c5271 elementor-widget elementor-widget-spacer\" data-id=\"04c5271\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6d7b47e7 elementor-widget elementor-widget-text-editor\" data-id=\"6d7b47e7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<blockquote><p><i>Core banking transformation has moved from a long-term strategic consideration to an immediate operational necessity. As institutions navigate the complexities of modernization, understanding the technological capabilities, implementation strategies, and business outcomes of leading platforms becomes essential. To provide practical insights into this critical evolution, we asked <strong>Jo\u00ebl Navarro, T24 Architect at BIL<\/strong> (Banque Internationale \u00e0 Luxembourg) and founder of ofsmaker.com, to share his analysis of the current state of core banking systems and the strategic imperatives driving their modernization.  <\/i><\/p><\/blockquote><h3><b>Core Banking System: The Heart of Banking in the Age of Modernization<span class=\"Apple-converted-space\"> <\/span><\/b><b><\/b><\/h3><p>In today&rsquo;s banking ecosystem, the <b>Core Banking System (CBS) <\/b>is defined as the <b>\u00ab\u00a0central nervous system\u00a0\u00bb <\/b>or \u00ab\u00a0heart\u00a0\u00bb of a financial institution. It is the back-end software that manages the most critical processes: general ledger maintenance, deposit management, loan processing, and real-time interest calculation. <span class=\"Apple-converted-space\"> <\/span><\/p><h4><b>The Modernization Imperative: Breaking Free from the Monolithic Era<span class=\"Apple-converted-space\"> <\/span><\/b><b><\/b><\/h4><p>For decades, banks have relied on monolithic architectures designed in the 1970s or 1980s, often written in <b>COBOL<\/b>. Today, these systems have become bottlenecks: <span class=\"Apple-converted-space\"> <\/span><\/p><ul><li><b>Obstacle to innovation: <\/b>More than 55% of banks consider their legacy systems the main barrier to achieving their business objectives.<\/li><li><b>Global urgency: <\/b>98% of banks plan to update their core infrastructure within three years to meet digital requirements.<\/li><li><b>Toward the \u00ab\u00a0Lean Core\u00a0\u00bb: <\/b>The current trend is to \u00ab\u00a0hollow the core\u00a0\u00bb to leave only basic functions in the CBS, while delegating complex services to agile microservices. <\/li><\/ul><h4><b>Focus on Temenos Transact: The Modern Core Banking Standard<span class=\"Apple-converted-space\"> <\/span><\/b><b><\/b><\/h4><p>Among market solutions, <b>Temenos Transact <\/b>(formerly known as <b>T24<\/b>) stands out as the global leader. Used by more than 3,000 institutions in 145 countries, it powers 41 of the world&rsquo;s 50 largest banks. <span class=\"Apple-converted-space\"> <\/span><\/p><p>What makes this platform indispensable?<span class=\"Apple-converted-space\"> <\/span><\/p><ol><li><b>Cloud-Native Architecture: <\/b>Unlike old monoliths, recent versions (R20+) are designed for the cloud, using containers (Kubernetes) for massive horizontal scalability.<\/li><li><b>Power of APIs: <\/b>The platform offers more than <b>700 RESTful APIs<\/b>, enabling seamless integration with the Open Banking ecosystem and third-party FinTech solutions.<\/li><li><b>Explainable Artificial Intelligence (XAI): <\/b>Temenos integrates AI modules for credit scoring or fraud detection, with the crucial ability to justify each decision to regulators.<\/li><li><b>Deployment Flexibility: <\/b>It is certified to run on all major cloud providers (Azure, AWS, GCP) as well as in hybrid or on-premise mode. <\/li><\/ol><h4><b>A Winning Transformation Strategy<span class=\"Apple-converted-space\"> <\/span><\/b><b><\/b><\/h4><p>Replacing a core system is often compared to \u00ab\u00a0changing a patient&rsquo;s heart while keeping them alive.\u00a0\u00bb This is why Temenos advocates <b>progressive migration <\/b>rather than a \u00ab\u00a0Big Bang\u00a0\u00bb approach. A bank can modernize its deposit or loan modules step by step, drastically reducing operational risks.  <span class=\"Apple-converted-space\"> <\/span><\/p><p>The results speak for themselves: banks using the Temenos platform achieve <b>cost-to-income <\/b>ratios of <b>26.8%<\/b>, approximately half the industry average, with significantly higher profitability.<span class=\"Apple-converted-space\"> <\/span><\/p><h4><b>Conclusion<span class=\"Apple-converted-space\"> <\/span><\/b><b><\/b><\/h4><p>CBS modernization is no longer a technical option, but a strategic imperative to survive against agile neobanks. The institutions that will succeed are those that can transform their infrastructure into an <b>open, intelligent, and cloud-native platform<\/b>. <span class=\"Apple-converted-space\"> <\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b3c4c4f elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"b3c4c4f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a233c7d elementor-widget elementor-widget-text-editor\" data-id=\"a233c7d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Sources :<\/p><ul><li>https:\/\/www.temenos.com\/wp-content\/uploads\/2020\/02\/cmd-presentation-2020-feb-13.pdf<\/li><li>https:\/\/web.archive.org\/web\/20171001031018\/https:\/\/www.temenos.com\/globalassets\/abt\/ir\/rep\/2017-interim\/temenos-interim-report-2017.pdf<\/li><li>https:\/\/www.temenos.com\/resource\/temenos-value-benchmark-insight-paper\/<\/li><li>https:\/\/www.temenos.com\/wp-content\/uploads\/2021\/03\/2020-Annual-Report-7u42lsu22.pdf\n <\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Core banking transformation has moved from a long-term strategic consideration to an immediate operational necessity. As institutions navigate the complexities of modernization, understanding the technological capabilities, implementation strategies, and business outcomes of leading platforms becomes essential. To provide practical insights into this critical evolution, we asked Jo\u00ebl Navarro, T24 Architect at BIL (Banque Internationale \u00e0 [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":7098,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[90],"tags":[],"class_list":["post-7099","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-core-banking"],"acf":[],"featured_image_src":{"landsacpe":["https:\/\/jc-advisory.lu\/wp-content\/uploads\/2026\/02\/Core-Banking-JC-Advisory.png",736,400,false],"list":["https:\/\/jc-advisory.lu\/wp-content\/uploads\/2026\/02\/Core-Banking-JC-Advisory-463x348.png",463,348,true],"medium":["https:\/\/jc-advisory.lu\/wp-content\/uploads\/2026\/02\/Core-Banking-JC-Advisory-300x163.png",300,163,true],"full":["https:\/\/jc-advisory.lu\/wp-content\/uploads\/2026\/02\/Core-Banking-JC-Advisory.png",736,400,false]},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - 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