{"id":7578,"date":"2026-08-19T15:07:59","date_gmt":"2026-08-19T13:07:59","guid":{"rendered":"https:\/\/arcad.lu\/?p=7578"},"modified":"2026-08-19T15:20:27","modified_gmt":"2026-08-19T13:20:27","slug":"cout-silos-fonctions-controle","status":"publish","type":"post","link":"https:\/\/arcad.lu\/en\/cout-silos-fonctions-controle\/","title":{"rendered":"The real cost of silos in a control system"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"7578\" class=\"elementor elementor-7578\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-6db90f4 elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"6db90f4\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element 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.arcad-grc-silos__vigil::after{\n    display:none;\n  }\n\n  .arcad-grc-silos .arcad-grc-silos__vigil-button{\n    width:100%;\n  }\n\n  .arcad-grc-silos .arcad-grc-silos__takeaway{\n    padding:28px 23px;\n  }\n\n  .arcad-grc-silos .arcad-grc-silos__cta{\n    grid-template-columns:1fr;\n    gap:22px;\n    padding:27px 23px;\n  }\n\n  .arcad-grc-silos .arcad-grc-silos__cta-button{\n    width:100%;\n    white-space:normal;\n  }\n\n  .arcad-grc-silos .arcad-grc-silos__foot{\n    margin-top:42px;\n    padding-bottom:52px;\n  }\n}\n<\/style>\n\n<article class=\"arcad-grc-silos\" lang=\"fr\">\n\n  <header class=\"arcad-grc-silos__hero\">\n    <div class=\"arcad-grc-silos__inner\">\n      <div class=\"arcad-grc-silos__hero-content\">\n\n        <p class=\"arcad-grc-silos__kicker\">\n          Silos \u00b7 Control functions \u00b7 Consolidation\n        <\/p>\n\n        <h1>The real cost of silos in a control system<\/h1>\n\n        <p class=\"arcad-grc-silos__lead\">\n          Each control function carefully observes its own piece of the puzzle. Nobody is looking at the entire picture. This compartmentalisation is rarely the result of a choice: it establishes itself gradually, through sedimentation. Yet it produces very real costs \u2014 blind spots, redundant efforts, and growing fatigue among operational teams.\n        <\/p>\n\n        <div class=\"arcad-grc-silos__meta\">\n          <span>Category: Governance<\/span>\n          <span>Reading time: 8 minutes<\/span>\n        <\/div>\n\n      <\/div>\n    <\/div>\n  <\/header>\n\n  <div class=\"arcad-grc-silos__inner\">\n\n    <div class=\"arcad-grc-silos__intro\">\n      <p class=\"arcad-grc-silos__intro-text\">\n        No organisation decides to silo its control functions. The phenomenon results from an accumulation of individually rational decisions.\n      <\/p>\n    <\/div>\n\n    <div class=\"arcad-grc-silos__facts\">\n\n      <div class=\"arcad-grc-silos__fact\">\n        <p class=\"arcad-grc-silos__fact-label\">\n          Blind spots\n        <\/p>\n        <p class=\"arcad-grc-silos__fact-value\">\n          Risks that nobody is consolidating\n        <\/p>\n      <\/div>\n\n      <div class=\"arcad-grc-silos__fact\">\n        <p class=\"arcad-grc-silos__fact-label\">\n          Redundancy\n        <\/p>\n        <p class=\"arcad-grc-silos__fact-value\">\n          The same teams called upon multiple times\n        <\/p>\n      <\/div>\n\n      <div class=\"arcad-grc-silos__fact\">\n        <p class=\"arcad-grc-silos__fact-label\">\n          Local decisions\n        <\/p>\n        <p class=\"arcad-grc-silos__fact-value\">\n          Optimal isolation, unfavourable for the whole\n        <\/p>\n      <\/div>\n\n    <\/div>\n\n    <div class=\"arcad-grc-silos__sections\">\n\n      <section class=\"arcad-grc-silos__section\">\n        <div class=\"arcad-grc-silos__number\">01<\/div>\n\n        <div class=\"arcad-grc-silos__content\">\n          <h2>How silos are installed<\/h2>\n\n          <p>\n            A new obligation appears: a function is created to handle it, along with its procedures and tool. An incident occurs: the relevant control is reinforced, locally. An entity is acquired: it keeps its own arrangements, pending harmonisation \u2014 a timeframe that stretches on. Software is acquired for a specific need: it becomes the system of record for that function, with no connection to the others.\n          <\/p>\n\n          <p>\n            Over the course of a few years, the organisation has acquired multiple mapping systems, multiple control plans, and multiple recommendation frameworks. Each of them is defensible; their juxtaposition is no longer so.\n          <\/p>\n        <\/div>\n      <\/section>\n\n      <section class=\"arcad-grc-silos__section\">\n        <div class=\"arcad-grc-silos__number\">02<\/div>\n\n        <div class=\"arcad-grc-silos__content\">\n          <h2>First cost: the blind spots<\/h2>\n\n          <p>\n            The most serious cost is also the least visible \u2014 by definition. When each function assesses its scope using its own scale, a significant risk may not appear anywhere as major.\n          <\/p>\n\n          <div class=\"arcad-grc-silos__note\">\n            <strong>A common scenario:<\/strong> In an organisation made up of numerous entities, IT security is managed locally by each unit, whilst the central function, which is under-resourced, does not have the necessary information to draw up a comprehensive assessment. Each unit considers its exposure acceptable given its size. No one measures the group's cumulative exposure. The problem is only identified when an incident occurs \u2014 or during a supervisory audit.\n          <\/div>\n\n          <p>\n            The mechanism is always the same: aggregation does not happen by itself. A sum of partial views does not produce an overview; it produces the illusion of complete coverage.\n          <\/p>\n        <\/div>\n      <\/section>\n\n      <section class=\"arcad-grc-silos__section\">\n        <div class=\"arcad-grc-silos__number\">03<\/div>\n\n        <div class=\"arcad-grc-silos__content\">\n          <h2>Second cost: locally optimal decisions<\/h2>\n\n          <p>\n            A second, more subtle effect concerns trade-offs. A decision may be perfectly rational with regard to the objectives of the person making it, and unfavourable for the organisation as a whole.\n          <\/p>\n\n          <p>\n            The classic case is that of a group entity that optimises its own results \u2014 by reorienting its production, reducing a cost item, or choosing a cheaper service provider \u2014 to the detriment of another entity that depended on it. The former's indicators improve; those of the group deteriorate.\n          <\/p>\n\n          <p>\n            This question goes beyond risk management: it touches upon governance. However, it can only be addressed if someone has a cross-functional overview \u2014 which the rigid compartmentalisation of departments makes precisely impossible.\n          <\/p>\n        <\/div>\n      <\/section>\n\n      <section class=\"arcad-grc-silos__section\">\n        <div class=\"arcad-grc-silos__number\">04<\/div>\n\n        <div class=\"arcad-grc-silos__content\">\n          <h2>Third cost: the burden imposed on the business units<\/h2>\n\n          <p>\n            That cost is felt directly by the operational teams. Over the course of the same quarter, a department manager might be contacted by compliance for a review, by risk management to update a mapping exercise, by internal control to provide evidence, and by internal audit for an assignment. Four requests, often on similar topics, with four formats and four different contacts.\n          <\/p>\n\n          <p>\n            The consequences are predictable: fatigue, rushed responses, a declining quality of information transmitted \u2014 and, ultimately, the perception of control functions as an administrative burden rather than as support. Coordinating requests is one of the most immediate benefits of an orchestration approach.\n          <\/p>\n        <\/div>\n      <\/section>\n\n      <section class=\"arcad-grc-silos__section\">\n        <div class=\"arcad-grc-silos__number\">05<\/div>\n\n        <div class=\"arcad-grc-silos__content\">\n          <h2>Fourth cost: inconsistency with the supervisor<\/h2>\n\n          <p>\n            For a regulated entity, this cost can become a risk in itself. When a supervisor questions the framework, they expect consistent answers. If the risk map, the control plan and the audit plan point to different priorities without explanation, the difficulty is no longer merely organisational: it is the credibility of the internal governance framework that is at stake.\n          <\/p>\n\n          <p>\n            The same logic applies to traceability. A decision documented in a tool, an approval kept in an email system and evidence stored on a shared server can all exist perfectly well \u2014 but if piecing them back together takes several days, demonstrating compliance becomes laborious.\n          <\/p>\n        <\/div>\n      <\/section>\n\n      <section class=\"arcad-grc-silos__section\">\n        <div class=\"arcad-grc-silos__number\">06<\/div>\n\n        <div class=\"arcad-grc-silos__content\">\n          <h2>Where to begin<\/h2>\n\n          <p>\n            Breaking down silos does not mean merging functions or rebuilding everything from scratch. A few steps produce rapid results:\n          <\/p>\n\n          <ul>\n            <li>\n              <strong>Compare the mappings.<\/strong> Bring together the control functions and compare their major risk registers. The gaps constitute the diagnosis.\n            <\/li>\n\n            <li>\n              <strong>Adopt a common language.<\/strong> A shared rating scale and taxonomy are often enough to make the work comparable.\n            <\/li>\n\n            <li>\n              <strong>Coordinate the outreach schedule.<\/strong> Group requests sent to the same team, even without unifying the methods.\n            <\/li>\n\n            <li>\n              <strong>Consolidate the reporting.<\/strong> A unique view intended for the management and the board, fed by each function in its domain.\n            <\/li>\n\n            <li>\n              <strong>Centralise the evidence.<\/strong> A single location for decisions, approvals and supporting documents, with clear traceability.\n            <\/li>\n          <\/ul>\n\n          <p>\n            These steps are primarily a matter of method and governance. Tools make them considerably easier, but they do not replace them.\n          <\/p>\n        <\/div>\n      <\/section>\n\n      <div class=\"arcad-grc-silos__vigil-wrap\">\n\n        <div class=\"arcad-grc-silos__vigil-context\">\n          <p>\n            <strong>When this joint organisation is defined, the tool can give operational reality to breaking down silos.<\/strong> Centralising tasks, controls, evidence and reporting helps to reduce scattered tracking while giving the various functions a shared view of the framework.\n          <\/p>\n        <\/div>\n\n        <aside class=\"arcad-grc-silos__vigil\">\n\n          <div class=\"arcad-grc-silos__vigil-copy\">\n\n            <span class=\"arcad-grc-silos__vigil-label\">\n              VIGIL \u00b7 GRC \/ RegTech Platform\n            <\/span>\n\n            <h3>\n              Bring your devices together in a common environment.\n            <\/h3>\n\n            <p>\n              VIGIL, a European-hosted modular GRC platform, centralises missions, controls, evidence and reporting.\n            <\/p>\n\n            <a\n              class=\"arcad-grc-silos__vigil-button\"\n              href=\"https:\/\/vigil-solutions.eu\/\"\n              target=\"_blank\"\n              rel=\"noopener noreferrer\"\n            >\n              Discover VIGIL \u2192\n            <\/a>\n\n          <\/div>\n\n        <\/aside>\n\n      <\/div>\n\n      <section class=\"arcad-grc-silos__section\">\n        <div class=\"arcad-grc-silos__number\">07<\/div>\n\n        <div class=\"arcad-grc-silos__content\">\n          <h2>The ARCAD approach<\/h2>\n\n          <p>\n            ARCAD is stepping in on this diagnostic: identifying overlaps, blind spots, and redundancies between functions, and then proposing a realistic target architecture \u2014 a common language, clarified responsibilities, consolidated reporting \u2014 tailored to the size and profile of the entity.\n          <\/p>\n        <\/div>\n      <\/section>\n\n    <\/div>\n\n    <aside class=\"arcad-grc-silos__takeaway\">\n\n      <span class=\"arcad-grc-silos__takeaway-label\">\n        To remember\n      <\/span>\n\n      <p>\n        Silos do not stem from ill will but from sedimentation. They cost in blind spots, unfavourable trade-offs, unnecessary burden for the business lines and inconsistency before the supervisor. Breaking down silos requires first a common language and consolidated reporting \u2014 not a reorganisation.\n      <\/p>\n\n    <\/aside>\n\n    <div class=\"arcad-grc-silos__cta\">\n\n      <div class=\"arcad-grc-silos__cta-copy\">\n\n        <p class=\"arcad-grc-silos__cta-title\">\n          Diagnose the partitioning of your control functions.\n        <\/p>\n\n        <p>\n          ARCAD compares your existing devices and proposes a realistic target architecture.\n        <\/p>\n\n      <\/div>\n\n      <a\n        class=\"arcad-grc-silos__cta-button\"\n        href=\"mailto:administration@arcad.lu?subject=Demande%20d'\u00e9change%20-%20D\u00e9cloisonner%20les%20fonctions%20de%20contr\u00f4le\"\n      >\n        Schedule an exchange \u2192\n      <\/a>\n\n    <\/div>\n\n    <footer class=\"arcad-grc-silos__foot\">\n\n      <h3>\n        References &amp; further reading\n      <\/h3>\n\n      <ul>\n        <li>\n          Three Lines Model, Institute of Internal Auditors (IIA), 2020.\n        <\/li>\n\n        <li>\n          OCEG works (<em>Open Compliance and Ethics Group<\/em>) on GRC capability orchestration.\n        <\/li>\n\n        <li>\n          Internal governance framework applicable to CSSF-regulated entities.\n        <\/li>\n      <\/ul>\n\n      <p class=\"arcad-grc-silos__scope\">\n        Note: Good practice to be adapted to the profile, size and regulatory framework specific to each organisation.\n      <\/p>\n\n    <\/footer>\n\n  <\/div>\n\n<\/article>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>The compartmentalisation of control functions creates blind spots, redundancies, unnecessary operational burdens and inconsistencies that weaken governance.<\/p>","protected":false},"author":2,"featured_media":7584,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[1],"tags":[30],"class_list":["post-7578","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","tag-grc"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.3.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Silos des fonctions de contr\u00f4le : quel co\u00fbt ? 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| ARCAD","description":"Discover how silos between control functions create blind spots, redundancies and inconsistencies, and how to start breaking them down.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/arcad.lu\/en\/cout-silos-fonctions-controle\/","og_locale":"en_GB","og_type":"article","og_title":"Silos des fonctions de contr\u00f4le : quel co\u00fbt ? | ARCAD","og_description":"D\u00e9couvrez comment les silos entre fonctions de contr\u00f4le cr\u00e9ent angles morts, redondances et incoh\u00e9rences, et comment amorcer leur d\u00e9cloisonnement.","og_url":"https:\/\/arcad.lu\/en\/cout-silos-fonctions-controle\/","og_site_name":"ARCAD","article_published_time":"2026-08-19T13:07:59+00:00","article_modified_time":"2026-08-19T13:20:27+00:00","og_image":[{"width":1035,"height":532,"url":"https:\/\/arcad.lu\/wp-content\/uploads\/2026\/08\/grc-3.png","type":"image\/png"}],"author":"Bastien Decerfou","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Bastien Decerfou","Estimated reading time":"6 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/arcad.lu\/cout-silos-fonctions-controle\/","url":"https:\/\/arcad.lu\/cout-silos-fonctions-controle\/","name":"Silos of control functions: what cost? 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