{"id":723060,"date":"2023-06-27T10:06:35","date_gmt":"2023-06-27T08:06:35","guid":{"rendered":"https:\/\/www.capgemini.com\/fr-fr\/?p=723060"},"modified":"2025-03-04T07:02:04","modified_gmt":"2025-03-04T06:02:04","slug":"le-composable-cloud-une-strategie-technologique-pour-lentreprise-du-futur","status":"publish","type":"post","link":"https:\/\/www.capgemini.com\/fr-fr\/perspectives\/blog\/composable-cloud-strategie-technologique-entreprise-du-futur\/","title":{"rendered":"Le composable cloud, une strat\u00e9gie technologique pour l\u2019entreprise du futur"},"content":{"rendered":"\n<header class=\"wp-block-cg-blocks-hero-blogs header-hero-blogs\"><div class=\"container\"><div class=\"hero-blogs\"><div class=\"hero-blogs-content-wrapper\"><div class=\"row\"><div class=\"col-12\"><div class=\"header-title\"><h1>Le composable cloud, une strat\u00e9gie technologique pour l\u2019entreprise du futur<\/h1><\/div><\/div><\/div><\/div><div class=\"hero-blogs-bottom\"><div class=\"header-author\"><div class=\"author-img\"><img decoding=\"async\" src=\"https:\/\/www.capgemini.com\/fr-fr\/wp-content\/uploads\/sites\/6\/2023\/06\/Pierre-Olivier-Patin.png?w=200&amp;quality=10\" alt=\"\" loading=\"lazy\"\/><\/div><div class=\"author-name-date\"><h5 class=\"author-name\">Pierre-Olivier Patin<\/h5><h5 class=\"blog-date\">26 juin 2023<\/h5><\/div><\/div><div class=\"brand-image\"> <\/div><\/div><\/div><\/div><\/header>\n\n\n\n<section class=\"wp-block-cg-blocks-intro-para undefined section section--intro\"><div class=\"intro-para\"><div class=\"container\"><div class=\"row\"><div class=\"col-12 col-md-1\"><nav class=\"article-social\"><ul class=\"social-nav\"><li class=\"ip-order-fb\"><a href=\"https:\/\/www.facebook.com\/sharer\/sharer.php?u=https:\/\/www.capgemini.com\/fr-fr\/perspectives\/blog\/composable-cloud-strategie-technologique-entreprise-du-futur\/\" target=\"_blank\" rel=\"noopener noreferrer\" title=\"Ouvrir dans une nouvelle fen\u00eatre\"><i aria-hidden=\"true\" class=\"icon-fb\"><\/i><span class=\"sr-only\">Facebook<\/span><\/a><\/li><li class=\"ip-order-li\"><a href=\"https:\/\/www.linkedin.com\/sharing\/share-offsite\/?url=https:\/\/www.capgemini.com\/fr-fr\/perspectives\/blog\/composable-cloud-strategie-technologique-entreprise-du-futur\/\" target=\"_blank\" rel=\"noopener noreferrer\" title=\"Ouvrir dans une nouvelle fen\u00eatre\"><i aria-hidden=\"true\" class=\"icon-li\"><\/i><span class=\"sr-only\">Linkedin<\/span><\/a><\/li><\/ul><\/nav><\/div><div class=\"col-12 col-md-11 col-lg-10\"><h2 class=\"intro-para-title\">Pour d\u00e9crire le monde dans lequel elles \u00e9voluent, les entreprises recourent fr\u00e9quemment \u00e0 l\u2019acronyme VUCA,\u00a0popularis\u00e9 par l\u2019arm\u00e9e am\u00e9ricaine\u00a0: Volatility, Uncertainty, Complexity, Ambiguity.<\/h2><p class=\"intro-para-content\">Pour s\u2019engager dans la transformation digitale, un autre VUCA a \u00e9t\u00e9 propos\u00e9 en guise de r\u00e9ponse\u00a0: Vision, Understanding, Courage, Adaptability.<\/p><\/div><\/div><\/div><\/div><\/section>\n\n\n\n<section class=\"wp-block-cg-blocks-group undefined section section--article-content\"><div class=\"article-main-content\"><div class=\"container\"><div class=\"row\"><div class=\"col-12 col-md-11 col-lg-10 offset-md-1 offset-lg-1\"><div class=\"article-text article-quote-text\">\n<p>Dans un environnement o\u00f9 l\u2019on ne peut ni tout pr\u00e9voir, ni tout contr\u00f4ler, il \u00e9rige ainsi la capacit\u00e9 d\u2019adaptation en vertu cardinale. Cette adaptabilit\u00e9 passe avant tout par celle des syst\u00e8mes d\u2019information, qui doivent pouvoir accompagner les fluctuations rapides de l\u2019activit\u00e9. C\u2019est pourquoi la flexibilit\u00e9 est devenue le leitmotiv de toutes les r\u00e9flexions sur le management de l\u2019IT. La m\u00e9thodologie 12 Facteurs souligne en particulier l\u2019importance capitale du d\u00e9couplage des diff\u00e9rents composants&nbsp;technologiques, de mani\u00e8re \u00e0 pouvoir modifier un \u00e9l\u00e9ment du syst\u00e8me sans qu\u2019il soit n\u00e9cessaire de reprendre tous les autres. Cette capacit\u00e9, \u00e0 rebours des grands syst\u00e8mes monolithiques et cloisonn\u00e9s du pass\u00e9, est la pierre angulaire de la logique composable. Composer, c\u2019est se donner la capacit\u00e9 de changer, de s\u2019adapter, d\u2019am\u00e9liorer, d\u2019innover, et surtout de pouvoir le faire tr\u00e8s vite, \u00e0 moindre co\u00fbt, et sans perturber ou mettre en p\u00e9ril le reste du SI.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-les-principes-du-composable\">Les principes du composable<\/h2>\n\n\n\n<p>Le composable repose sur quatre principes fondamentaux&nbsp;: la modularit\u00e9, l\u2019autonomie, l\u2019orchestration et la d\u00e9couverte. Pour saisir toute leur port\u00e9e, l\u2019analogie usuelle avec un c\u00e9l\u00e8bre jeu de construction danois est particuli\u00e8rement \u00e9clairante. Il est possible de tout construire \u00e0 l\u2019aide de briques \u00e9l\u00e9mentaires pourvu qu\u2019elles respectent quelques r\u00e8gles&nbsp;: elles doivent toutes \u00eatre compatibles les unes avec les autres gr\u00e2ce \u00e0 des interfaces rigoureusement standard&nbsp;; leurs formes, tout en \u00e9tant tr\u00e8s vari\u00e9es, sont immuables et connues \u00e0 l\u2019avance&nbsp;; ces formes ne sont ni trop petites, pour acc\u00e9l\u00e9rer la construction, ni trop grandes, pour rester suffisamment g\u00e9n\u00e9riques et \u00eatre r\u00e9utilisables au maximum&nbsp;; les attributs structurants (formes, couleurs, interfaces\u2026) sont p\u00e9rennes et g\u00e9r\u00e9s en dehors des projets&nbsp;; les briques, enfin, sont convenablement r\u00e9f\u00e9renc\u00e9es, rang\u00e9es et document\u00e9es pour que chacun puisse les retrouver facilement et les utiliser \u00e0 bon escient.<\/p>\n\n\n\n<p>Contrairement \u00e0 d\u2019autres approches modulaires, le composable applique ces principes au-del\u00e0 de l\u2019assemblage de briques technologiques \u00e9l\u00e9mentaires, ce qui \u00e9vite notamment la granularit\u00e9 trop fine des micro-services et d\u00e9multiplie les possibilit\u00e9s de mutualisation.<br>Par exemple, on d\u00e9finira un package de capacit\u00e9s business r\u00e9utilisables comme un panier de site e-commerce, proposant la gestion du contenu, la prise en compte des remises, les options de livraison, l\u2019\u00e9valuation des d\u00e9lais de livraison \u2026 \u00e0 la place d\u2019une capacit\u00e9 technique unitaire d\u2019un API d\u2019ajout d\u2019article au panier.<\/p>\n\n\n\n<p><br>En d\u00e9clinant le composable de bout en bout, et \u00e0 tous les niveaux, l\u2019entreprise constitue ainsi son propre jeu de \u00ab&nbsp;building blocks&nbsp;\u00bb technologiques, avec lesquels elle b\u00e2tit des applications composites,&nbsp;puis des solutions&nbsp;composites, puis, enfin, des business composites. Entre chacun de ces niveaux, une couche d\u2019abstraction masque aux utilisateurs la complexit\u00e9 sous-jacente. Ainsi, ils peuvent se concentrer sur la logique d\u2019assemblage tout en ayant la certitude que les \u00e9l\u00e9ments qu\u2019ils utilisent sont op\u00e9rationnels, interop\u00e9rables et conformes aux r\u00e8gles de l\u2019entreprise.<\/p>\n\n\n\n<p>Pour que l\u2019ensemble puisse fonctionner, deux \u00e9l\u00e9ments sont essentiels&nbsp;:&nbsp;d\u2019une part, le caract\u00e8re standard et p\u00e9renne des interfaces, on l\u2019a vu, et, d\u2019autre part, la gestion par \u00e9v\u00e9nements (event-driven). De cette fa\u00e7on, chaque composant du syst\u00e8me est inform\u00e9 directement de ce qui se passe et agit en cons\u00e9quence, de mani\u00e8re coordonn\u00e9e, sans attendre les instructions d\u2019une autorit\u00e9 r\u00e9gulatrice. C\u2019est pourquoi, plus encore que d\u2019orchestration, on pourrait parler pour le composable de chor\u00e9graphie&nbsp;: tandis que l\u2019orchestration suppose un contr\u00f4le centralis\u00e9, qui donne le ton et rappelle \u00e0 l\u2019ordre en cas de d\u00e9rive, la chor\u00e9graphie donne \u00e0 chacun les directives et les outils pour qu\u2019il s\u2019exprime librement, en harmonie avec les autres, et sache s\u2019adapter de lui-m\u00eame pour maintenir la coh\u00e9sion de l\u2019ensemble, notamment en cas de panne ou de variations de charge.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Le composable, une approche d\u2019entreprise<\/h2>\n\n\n\n<p>Traversant toute l\u2019organisation, le composable est en d\u00e9finitif un sch\u00e9ma de pens\u00e9e qui relie la strat\u00e9gie \u00e0 la technique, et cela dans les deux sens&nbsp;: de la strat\u00e9gie d\u00e9coulent les r\u00e8gles globales qui fa\u00e7onneront les building blocks&nbsp;; de la technique remontent des opportunit\u00e9s business dont les d\u00e9cideurs auront les moyens de s\u2019emparer. Autrement dit, beaucoup plus qu\u2019un parti-pris de d\u00e9veloppement, le composable est une strat\u00e9gie technologique d\u2019entreprise, qui envisage d\u2019embl\u00e9e celle-ci comme un \u00e9difice (on parle souvent d\u2019entreprise-plateforme) et qui absorbe les imp\u00e9ratifs de construction pour faire de leur ma\u00eetrise un avantage concurrentiel face aux d\u00e9fis du futur. Dans un secteur comme le manufacturing, par exemple, la composable apporte la souplesse n\u00e9cessaire \u00e0 la personnalisation et aux petites s\u00e9ries, aux perp\u00e9tuels al\u00e9as de production, aux constantes \u00e9volutions r\u00e9glementaires, aux innovations produit, tout en apportant la robustesse, la r\u00e9silience, la s\u00e9curit\u00e9 et les performances qu\u2019exigent les processus industriels.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Le cloud, l\u2019incontournable socle technologique<\/h2>\n\n\n\n<p>En pratique, l\u2019architecture composable est donc constitu\u00e9e d\u2019\u00e9l\u00e9ments de base standardis\u00e9s et interop\u00e9rables. Le cloud en est le socle, l\u2019\u00ab&nbsp;<em>enabler<\/em>&nbsp;\u00bb, incontournable car il propose d\u00e9j\u00e0 sur \u00e9tag\u00e8re de tr\u00e8s nombreux services \u00e9l\u00e9mentaires, qu\u2019il n\u2019est donc pas n\u00e9cessaire de red\u00e9velopper. En revanche, pour devenir des building blocks, ces services doivent \u00eatre adapt\u00e9s aux sp\u00e9cificit\u00e9s de l\u2019entreprise, qui leur adjoint ses propres r\u00e8gles de s\u00e9curit\u00e9, d\u2019administration, de consommation, FinOps, etc. Un building block, c\u2019est un service cloud contextualis\u00e9 et personnalis\u00e9, assorti de son guide d\u2019utilisation.<\/p>\n\n\n\n<p>Ensuite, gr\u00e2ce \u00e0 ces building blocks, on pourra d\u00e9velopper des applications cloud natives en s\u2019appuyant sur des m\u00e9thodes adapt\u00e9es (12 Facteurs, DDD, DevOps, agile\u2026) ainsi que sur des technologies et un outillage appropri\u00e9s. On peut notamment citer Dapr (Distributed Apps Runtime), qui dissocie les aspects fonctionnels des aspects techniques, regroup\u00e9s dans un environnement d\u2019ex\u00e9cution autonome (side-car)&nbsp;; les architectures serverless, qui permettent, elles aussi, de focaliser les d\u00e9veloppeurs sur les enjeux m\u00e9tiers tout en r\u00e9duisant au minimum les ressources d\u2019ex\u00e9cution&nbsp;; ou encore Kafka pour la gestion par \u00e9v\u00e9nements.<\/p>\n\n\n\n<p>Pour leur part, les grands cloud providers ont pris le virage de cette tendance \u00e9mergente et proposent, chacun \u00e0 leur mani\u00e8re, des \u00ab&nbsp;composers&nbsp;\u00bb&nbsp;: Application Composer d\u2019AWS, pour le design d\u2019application serverless&nbsp;; Cloud Composer de GCP, un workflow d\u2019orchestration de services&nbsp;; Composable Cloud d\u2019Azure, qui propose des architectures de r\u00e9f\u00e9rence et compl\u00e8te son approche avec le d\u00e9veloppement Low Code\/No Code de la suite PowerApps de Microsoft, par nature composable.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Comment d\u00e9buter&nbsp;?<\/h2>\n\n\n\n<p>Le composable est une v\u00e9ritable r\u00e9volution culturelle dans la fa\u00e7on dont l\u2019entreprise se con\u00e7oit, fonctionne et cr\u00e9e ses applications. C\u2019est donc une transformation profonde, qui touche toute l\u2019organisation, \u00e0 tous les niveaux. Sauf pour des activit\u00e9s enti\u00e8rement nouvelles, qui partiraient d\u2019une feuille blanche, il est difficile d\u2019imaginer qu\u2019elle puisse se d\u00e9cr\u00e9ter du sommet. Il s\u2019agit plut\u00f4t d\u2019organiser une diffusion des principes et de la culture composable depuis la base en suscitant des vocations de pionniers, en soutenant leurs initiatives et en les valorisant. Le r\u00f4le de ces leaders sera de tester et valider les concepts dans le cadre de l\u2019entreprise, puis de convaincre des sponsors, qui auront, \u00e0 leur tour, la capacit\u00e9 de f\u00e9d\u00e9rer autour de la d\u00e9marche afin d\u2019en \u00e9largir l\u2019adoption.<\/p>\n<\/div><\/div><\/div><\/div><\/div><\/section>\n\n\n\n<section class=\"wp-block-cg-blocks-wrapper-people-slider section section--expert-slider wrapper-people-slider undefined\"><div class=\"container\"><div class=\"content-title\"><h3 data-maxlength=\"34\">Auteur :<\/h3><\/div><\/div><div class=\"slider slider-boxed\"><div class=\"container\"><div class=\"slider-window\"><div class=\"slider-list\">\n\t\t<div class=\"slide\">\n\t\t\t<div class=\"box\">\n\t\t\t\t<div class=\"row\">\n\t\t\t\t\t<div class=\"col-md-6 col-lg-4 box-img-wrapper\">\n\t\t\t\t\t\t<img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/www.capgemini.com\/fr-fr\/wp-content\/uploads\/sites\/6\/2023\/06\/Pierre-Olivier-Patin.png\" alt=\"Pierre-Olivier Patin\"\/>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div class=\"col-md-6 col-lg-8 box-inner\">\n\t\t\t\t\t\t<div class=\"row title-social-media-header\">\n\t\t\t\t\t\t\t<div class=\"col-md-12 col-lg-6 mbl-social-icon\">\n\t\t\t\t\t\t\t\t<ul class=\"social-nav\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<li><a aria-label=\"Linkedin\" target=\"_blank\" title=\"Ouvrir dans une nouvelle fen\u00eatre\" href=\"https:\/\/www.linkedin.com\/in\/pierreolivierpatin\/\"><i aria-hidden=\"true\" class=\"icon-li\"><\/i><\/a><\/li>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"col-md-12 col-lg-6 box-container\">\n\t\t\t\t\t\t\t\t<div class=\"box-title\">\n\t\t\t\t\t\t\t\t\t<h3 class=\"people-profile-title\">Pierre-Olivier Patin<\/h3>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span>Group CTO Cloud &amp; DevOps, Sogeti part of Capgemini<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"col-md-12 col-lg-6 social-box-container dkt-social-icon\">\n\t\t\t\t\t\t\t\t<ul class=\"social-nav\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<li><a aria-label=\"Linkedin\" target=\"_blank\" title=\"Ouvrir dans une nouvelle fen\u00eatre\" href=\"https:\/\/www.linkedin.com\/in\/pierreolivierpatin\/\"><i aria-hidden=\"true\" class=\"icon-li\"><\/i><\/a><\/li>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"people-info\">Pierre-Olivier est passionn\u00e9 par l\u2019adoption des technologies, en particulier cloud, DevOps et Plateforme engineering. Il appr\u00e9cie tout particuli\u00e8rement la mise en perspective, du contexte m\u00e9tier, de l\u2019architecture et des organisations \u00e0 l\u2019\u00e9chelle de l\u2019entreprise, avec les capacit\u00e9s technologiques et les pratiques agiles de design et de d\u00e9veloppement, au service de l\u2019efficience et de l\u2019innovation des applications et produits.<\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\n<\/div><\/div><\/div><div class=\"slider-nav\"><button class=\"slider-prev inactive\" aria-label=\"Curseur pr\u00e9c\u00e9dent\" tabindex=\"-1\"><\/button><ul class=\"slider-paginator\"><\/ul><button class=\"slider-next\" aria-label=\"Curseur suivant\"><\/button><\/div><\/div><\/section>\n","protected":false},"excerpt":{"rendered":"<p>Pour d\u00e9crire le monde dans lequel elles \u00e9voluent, les entreprises recourent fr\u00e9quemment \u00e0 l\u2019acronyme VUCA, popularis\u00e9 par l\u2019arm\u00e9e am\u00e9ricaine : Volatility, Uncertainty, Complexity, Ambiguity.<br \/>\nPour s\u2019engager dans la transformation digitale, un autre VUCA a \u00e9t\u00e9 propos\u00e9 en guise de r\u00e9ponse : Vision, Understanding, Courage, Adaptability.<\/p>\n","protected":false},"author":201,"featured_media":723164,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"cg_dt_proposed_to":[],"cg_seo_hreflang_relations":"[]","cg_seo_canonical_relation":"{\"uuid\":\"f8b8e9fe-3451-4206-8a66-0b930c5a8ae4\",\"blogId\":\"\",\"domain\":\"\",\"sitePath\":\"\",\"postLink\":\"\",\"postId\":null,\"isSaved\":true,\"isCrossLink\":false,\"hasCrossLink\":false}","cg_seo_hreflang_x_default_relation":"{\"uuid\":\"91545888-918d-4c3d-a2f1-3ed5c58bb2ff\",\"blogId\":\"\",\"domain\":\"\",\"sitePath\":\"\",\"postLink\":\"\",\"postId\":null,\"isSaved\":true,\"isCrossLink\":false,\"hasCrossLink\":false}","cg_dt_approved_content":true,"cg_dt_mandatory_content":false,"cg_dt_notes":"","cg_dg_source_changed":false,"cg_dt_link_disabled":false,"_yoast_wpseo_primary_brand":"","_jetpack_memberships_contains_paid_content":false,"footnotes":"","featured_focal_points":""},"categories":[5,138],"tags":[188],"brand":[],"service":[35],"industry":[],"partners":[],"blog-topic":[350],"content-group":[],"class_list":["post-723060","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technologies","category-transformation","tag-cloud","service-cloud","blog-topic-cloud"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.8 (Yoast SEO v22.8) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Le composable cloud, une strat\u00e9gie technologique pour l\u2019entreprise du futur - Capgemini France<\/title>\n<meta name=\"description\" content=\"Pour d\u00e9crire le monde dans lequel elles \u00e9voluent, les entreprises recourent fr\u00e9quemment \u00e0 l\u2019acronyme VUCA, popularis\u00e9 par l\u2019arm\u00e9e am\u00e9ricaine : Volatility, Uncertainty, Complexity, Ambiguity. 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