{"id":21802,"date":"2025-08-27T09:00:00","date_gmt":"2025-08-27T07:00:00","guid":{"rendered":"https:\/\/itpatagonia.com\/?p=21802"},"modified":"2026-03-12T18:11:21","modified_gmt":"2026-03-12T17:11:21","slug":"modernizacion-del-core","status":"publish","type":"post","link":"https:\/\/itpatagonia.com\/en\/blog\/modernizacion-del-core","title":{"rendered":"Core modernization: technical efficiency, financial control, and strategic vision"},"content":{"rendered":"<p>The mainframe continues to be a central component for industries such as banking, insurance, telecommunications, logistics, and retail, among others.&nbsp;<\/p>\n\n\n\n<p>Its stability, performance, and security make it a reliable platform for mission-critical processes. However, <strong>Its permanence should not be confused with immobility<\/strong>.&nbsp;<\/p>\n\n\n\n<p>Even less so when business models evolve rapidly and transactional levels increase. In this scenario, technology areas are under pressure to <strong>reduce TCO (Total Cost of Ownership), accelerate the <\/strong><strong><em>time-to-market<\/em><\/strong><strong> and align infrastructures with the principles of scalability and agility<\/strong>.&nbsp;<\/p>\n\n\n\n<p>That is why <strong>Core modernization becomes a survival and growth strategy<\/strong>.<\/p>\n\n\n\n<p>In this article, we analyze 7 keys to approaching it in an intelligent, technical way that has a business impact.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>How do companies perceive core modernization?<\/strong><\/h2>\n\n\n\n<p>The report <a href=\"https:\/\/www.kyndryl.com\/gb\/en\/campaign\/state-of-mainframe-modernization\" target=\"_blank\" rel=\"noreferrer noopener\">Kyndryl 2023 State of Mainframe Modernization Survey Report<\/a>, revealed through the responses of the main users of this technology worldwide, that <a href=\"https:\/\/itpatagonia.com\/en\/modernizacion-mainframe-industria-bancaria\/\">Mainframes remain essential to business operations<\/a>. <strong>This was considered by the 90% of those who received the consultation.<\/strong>.<\/p>\n\n\n\n<p>Their robust architecture and ability to run various operating systems and applications make them extremely versatile and suitable for the banking and insurance sectors.&nbsp;<\/p>\n\n\n\n<p>Mainframes are valued by users for their levels of security (68%), reliability (60%) and performance (55%).<\/p>\n\n\n\n<p>In fact, the <a href=\"https:\/\/fingfx.thomsonreuters.com\/gfx\/rngs\/USA-BANKS-COBOL\/010040KH18J\/index.html\">The mainframe world is made up of 92% of the major banks<\/a> Commercials. Their importance is such that you wouldn&#039;t be able to view your bank balance on your cell phone or process a credit card purchase without a mainframe behind them.<\/p>\n\n\n\n<p>That&#039;s why 67% organizations are moving forward with modernizing their mainframes to optimize their performance and capacity, and to streamline their software.&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-4-3 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe title=\"Webinar - Mainframe Performance - How much are you overspending by not optimizing performance?\" width=\"500\" height=\"375\" src=\"https:\/\/www.youtube.com\/embed\/njFds0auZVU?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>7 keys to core modernization<\/strong><\/h2>\n\n\n\n<p>Faced with increasing MIPS consumption, dependence on legacy code, and pressure to integrate new architectures, <strong>It is key to rethink how resources are managed and optimized<\/strong>.&nbsp;<\/p>\n\n\n\n<p>This guide presents seven key elements for approaching this transformation in an intelligent, technical, and business-impacting manner. From in-depth code reviews to tuning automation and consumption governance.&nbsp;<\/p>\n\n\n\n<p>Core modernization doesn&#039;t just involve a technological upgrade. It also involves building a platform that&#039;s ready to evolve.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">1.<strong> Reviewing and optimizing legacy code: the technical basis for savings<\/strong><\/h2>\n\n\n\n<p>Legacy code is, in many cases, the main source of MIPS inefficiency. Why? For at least four reasons:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Poor modularization<\/strong>: blocks of thousands of lines, without logical separation.<\/li>\n\n\n\n<li><strong>Logical redundancy<\/strong>: duplicate routines, unnecessary conditions or repetitive calculations.<\/li>\n\n\n\n<li><strong>Unoptimized SQL queries<\/strong>: Unnecessary joins, missing indexes.<\/li>\n\n\n\n<li><strong>Lack of use of modern resources<\/strong>: Routines that could run in zIIP or distributed environments remain on the main CPU.<\/li>\n<\/ul>\n\n\n\n<p>Code auditing should be approached with automated tools combined with expert analysis.&nbsp;<\/p>\n\n\n\n<p>But optimizing doesn&#039;t just mean refactoring. It also involves:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Detect dead code.<\/li>\n\n\n\n<li>Reduce execution paths.<\/li>\n\n\n\n<li>Modularize for granular testing and tuning.&nbsp;<\/li>\n\n\n\n<li>Re-evaluate the implemented business logic.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">2. <strong>Precise consumption measurement: visibility for timely intervention<\/strong><\/h2>\n\n\n\n<p>Mainframe costs are closely related to consumption, so it&#039;s very important to have transactions and processes running efficiently as part of core modernization.<\/p>\n\n\n\n<p>In fact, one <a href=\"https:\/\/itpatagonia.com\/en\/blog-ahorro-de-mips-en-mainframes\/\">Much of the budget in mainframe environments is consumed by MIPS-based licenses<\/a>However, many organizations do not know precisely which component consumes each resource.<\/p>\n\n\n\n<p>Therefore, it is essential to establish an observability ecosystem that:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Trace CPU usage at the job, task, transaction, and user levels.<\/li>\n\n\n\n<li>Distinguish between planned consumption and deviations (e.g. unjustified peaks).<\/li>\n\n\n\n<li>Generate <em>dashboards<\/em> with historical comparisons and projections.<\/li>\n\n\n\n<li>Integrate with business rules to link consumption with delivered value.<\/li>\n<\/ul>\n\n\n\n<p>Additionally, KPIs such as cost per transaction, consumption per functional unit, or efficiency per release can be established. This allows us to move from a technical perspective to a financial view of mainframe usage.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"389\" src=\"https:\/\/itpatagonia.com\/wp-content\/uploads\/2025\/07\/modernizacion-de-core-1-1024x389.png\" alt=\"Establecer indicadores de gesti\u00f3n permite pasar de una mirada t\u00e9cnica a una visi\u00f3n financiera del uso del mainframe.\" class=\"wp-image-23992\" srcset=\"https:\/\/itpatagonia.com\/wp-content\/uploads\/2025\/07\/modernizacion-de-core-1-1024x389.png 1024w, https:\/\/itpatagonia.com\/wp-content\/uploads\/2025\/07\/modernizacion-de-core-1-300x114.png 300w, https:\/\/itpatagonia.com\/wp-content\/uploads\/2025\/07\/modernizacion-de-core-1-768x291.png 768w, https:\/\/itpatagonia.com\/wp-content\/uploads\/2025\/07\/modernizacion-de-core-1-1536x583.png 1536w, https:\/\/itpatagonia.com\/wp-content\/uploads\/2025\/07\/modernizacion-de-core-1-2048x777.png 2048w, https:\/\/itpatagonia.com\/wp-content\/uploads\/2025\/07\/modernizacion-de-core-1-18x7.png 18w, https:\/\/itpatagonia.com\/wp-content\/uploads\/2025\/07\/modernizacion-de-core-1-720x273.png 720w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Establishing management indicators allows us to move from a technical perspective to a financial view of mainframe use.<\/figcaption><\/figure>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>It is also extremely important to know and detect where the problems or bottlenecks are, whether due to a poorly compiled, poorly programmed, or poorly planned process.<\/p>\n\n\n\n<p>Even more so considering that the processes can have a <strong>Reduction of at least 20 % to 30 % in terms of usage times<\/strong>.<\/p>\n\n\n\n<p>It is also essential to determine the best way to optimize performance and <a href=\"https:\/\/itpatagonia.com\/en\/cics-como-mejorar-el-rendimiento-del-mainframe\/\">Increase mainframe availability by improving CICS configuration<\/a>, carrying out two types of evaluations:&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>CICS Assessment configuration<\/strong>: A process performed to evaluate the state of the CICS configuration.<\/li>\n\n\n\n<li><strong>CICS Transactional Assessment<\/strong>: a process performed to evaluate the performance of CICS transactions on a mainframe.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">3. <strong>Batch Process Optimization: Design for Efficiency<\/strong><\/h2>\n\n\n\n<p>Batch processes are ideal candidates for optimization. Poor design can create bottlenecks, fill windows, or trigger unnecessary consumption.<\/p>\n\n\n\n<p>Key strategies to consider include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Smart rescheduling<\/strong>: reorganize execution according to the actual load and business priorities.<\/li>\n\n\n\n<li><strong>Parallel partitioning<\/strong>: split large sequential processes into concurrent threads.<\/li>\n\n\n\n<li><strong>Distributed pre-processing<\/strong>: filtering and transforming data in cheaper pre-mainframe environments.<\/li>\n\n\n\n<li><strong>Using optimized sort and copy<\/strong>: Tools like Syncsort allow automatic offloading to zIIP.<\/li>\n<\/ul>\n\n\n\n<p>A modern view suggests rethinking the very concept of batch and asking:&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Which processes can be switched to continuous execution?&nbsp;<\/li>\n\n\n\n<li>Which parts of processing can be turned into asynchronous events?<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"389\" src=\"https:\/\/itpatagonia.com\/wp-content\/uploads\/2025\/07\/Modernizacion-de-core-3-1024x389.png\" alt=\"Optimizar los procesos batch permite reducir cuellos de botella, mejorar el tiempo de ventanas cr\u00edticas y reducir el consumo innecesario.\" class=\"wp-image-23995\" srcset=\"https:\/\/itpatagonia.com\/wp-content\/uploads\/2025\/07\/Modernizacion-de-core-3-1024x389.png 1024w, https:\/\/itpatagonia.com\/wp-content\/uploads\/2025\/07\/Modernizacion-de-core-3-300x114.png 300w, https:\/\/itpatagonia.com\/wp-content\/uploads\/2025\/07\/Modernizacion-de-core-3-768x291.png 768w, https:\/\/itpatagonia.com\/wp-content\/uploads\/2025\/07\/Modernizacion-de-core-3-1536x583.png 1536w, https:\/\/itpatagonia.com\/wp-content\/uploads\/2025\/07\/Modernizacion-de-core-3-2048x777.png 2048w, https:\/\/itpatagonia.com\/wp-content\/uploads\/2025\/07\/Modernizacion-de-core-3-18x7.png 18w, https:\/\/itpatagonia.com\/wp-content\/uploads\/2025\/07\/Modernizacion-de-core-3-720x273.png 720w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Optimizing batch processes helps reduce bottlenecks, improve the timing of critical windows, and reduce unnecessary consumption.<\/figcaption><\/figure>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">4. <strong>Offloading: moving what doesn&#039;t need to be on the mainframe<\/strong><\/h2>\n\n\n\n<p>MIPS consumption can be radically reduced by shifting the load to:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>zIIP\/zAAP<\/strong>: Leverage dedicated engines for DB2, Java, XML, encryption, and specific workloads.<\/li>\n\n\n\n<li><strong>Distributed servers<\/strong>: move non-critical analysis, report generation or validations.<\/li>\n\n\n\n<li><strong>Hybrid Cloud<\/strong>: Extract non-transactional functionalities (monitoring, integration, analytics) and process them on more cost-effective platforms.<\/li>\n<\/ul>\n\n\n\n<p>Well-planned offloading requires identifying processes, adapting interfaces, and ensuring consistency.&nbsp;<\/p>\n\n\n\n<p>In addition, it opens the <a href=\"https:\/\/itpatagonia.com\/en\/claves-para-migrar-arquitectura-de-microservicios\/\">path towards decoupled architectures and microservices,<\/a> which facilitates gradual migration in response to the need for core modernization.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">5. <strong>Tuning automation: continuous efficiency without operational overhead<\/strong><\/h2>\n\n\n\n<p>In traditional mainframe ecosystems, tuning is manual, reactive and <a href=\"https:\/\/itpatagonia.com\/en\/como-trabajar-en-mainframe\/\">reporting to senior specialists<\/a>. Which compromises scalability.<\/p>\n\n\n\n<p>Today <strong>It is possible to incorporate rules-based automation and artificial intelligence<\/strong>, which allows:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Dynamically adjust buffers, memory pools, and job priority.<\/li>\n\n\n\n<li>Detect performance deviations and propose alternative configurations.<\/li>\n\n\n\n<li>Learn usage patterns and anticipate future behaviors.<\/li>\n<\/ul>\n\n\n\n<p>This layer of intelligence helps reduce operational workload, avoid bottlenecks, and maintain efficiency, even with changing environments or rotating equipment. A significant achievement for core modernization.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"389\" src=\"https:\/\/itpatagonia.com\/wp-content\/uploads\/2025\/07\/modernizacion-de-core-2-1024x389.png\" alt=\"Hoy es posible incorporar una automatizaci\u00f3n basada en reglas e inteligencia artificial para modernizar los sistemas core.\" class=\"wp-image-23993\" srcset=\"https:\/\/itpatagonia.com\/wp-content\/uploads\/2025\/07\/modernizacion-de-core-2-1024x389.png 1024w, https:\/\/itpatagonia.com\/wp-content\/uploads\/2025\/07\/modernizacion-de-core-2-300x114.png 300w, https:\/\/itpatagonia.com\/wp-content\/uploads\/2025\/07\/modernizacion-de-core-2-768x291.png 768w, https:\/\/itpatagonia.com\/wp-content\/uploads\/2025\/07\/modernizacion-de-core-2-1536x583.png 1536w, https:\/\/itpatagonia.com\/wp-content\/uploads\/2025\/07\/modernizacion-de-core-2-2048x777.png 2048w, https:\/\/itpatagonia.com\/wp-content\/uploads\/2025\/07\/modernizacion-de-core-2-18x7.png 18w, https:\/\/itpatagonia.com\/wp-content\/uploads\/2025\/07\/modernizacion-de-core-2-720x273.png 720w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Today, it is possible to incorporate rules-based automation and artificial intelligence to modernize core systems.<\/figcaption><\/figure>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">6. <strong>MIPS Consumption Governance<\/strong><\/h2>\n\n\n\n<p>Resource management should not be limited to the technical area. It requires a <strong>MIPS consumption governance that crosses business, IT and finance areas<\/strong>, and is based on:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Budget policies and limits by business unit.<\/li>\n\n\n\n<li>A transparent and shared cost model.<\/li>\n\n\n\n<li>Automated alerts and reports with actionable insights.<\/li>\n\n\n\n<li>A cross-accountability model: where each unit knows its impact and can plan accordingly.<\/li>\n<\/ul>\n\n\n\n<p>This approach allows us to replace the discussion of why the mainframe bill rose with an analysis of how to make the operating model more efficient.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">7. <strong>Modernization as a long-term strategy: the core as an evolutionary platform<\/strong><\/h2>\n\n\n\n<p>The <a href=\"https:\/\/itpatagonia.com\/en\/transformacion-digital-del-mainframe\/\">core modernization<\/a> It&#039;s not limited to a single intervention. It should be designed as a strategy for continuous core development that:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Integrate progressive refactoring with feature encapsulation.<\/li>\n\n\n\n<li>Enable APIs to expose capabilities without touching the logic.<\/li>\n\n\n\n<li>Add DevOps practices (testing automation, adapted CI\/CD).<\/li>\n\n\n\n<li>Promote a bimodal team: keeping the critical and developing the new.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Conclusion: efficiency, visibility and control for a sustainable future<\/strong><\/h2>\n\n\n\n<p>Modernizing the core doesn&#039;t mean abandoning what works. On the contrary, it seeks to transform it so that it remains a <a href=\"https:\/\/itpatagonia.com\/en\/claves-para-modernizar-el-mainframe\/\">competitive advantage<\/a> instead of a technical and economic burden.<\/p>\n\n\n\n<p>The benefits are concrete:&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>MIPS reduction.<\/li>\n\n\n\n<li>Lower operating costs.<\/li>\n\n\n\n<li>Better governance.<\/li>\n\n\n\n<li>Greater agility for new products.<\/li>\n\n\n\n<li>Architectures better prepared to integrate cloud, AI, and advanced analytics.<\/li>\n<\/ul>\n\n\n\n<p>A comprehensive core modernization strategy requires technical investment, leadership in the change process, and a long-term vision.&nbsp;<\/p>\n\n\n\n<p>But the <a href=\"https:\/\/itpatagonia.com\/en\/claves-para-la-modernizacion-del-mainframe\/\">results<\/a> in resilience, efficiency and alignment with the business justify each step of the process.<\/p>\n\n\n\n<p>Get to know our <a href=\"https:\/\/itpatagonia.com\/en\/servicios\/mainframe\/\">Mainframe Center of Excellence<\/a>, with which we are transforming the mainframe for the future.<\/p>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>We analyze the keys to core modernization, from code optimization and MIPS reduction to offloading, automated tuning, and power governance. A technical and strategic approach for a more agile and efficient infrastructure.<\/p>","protected":false},"author":3,"featured_media":23996,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"content-type":"","footnotes":""},"categories":[141],"tags":[152,79],"class_list":["post-21802","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mainframe","tag-modernizacion","tag-transformacion-digital"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Modernizaci\u00f3n del core: eficiencia, control financiero y estrategia<\/title>\n<meta name=\"description\" content=\"Te damos las 7 claves que hay que seguir para la modernizaci\u00f3n del core: eficiencia t\u00e9cnica, control de MIPS y plataforma para evolucionar.\" \/>\n<meta name=\"robots\" content=\"index, follow, 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