{"id":3766,"date":"2013-05-29T09:32:27","date_gmt":"2013-05-29T08:32:27","guid":{"rendered":"http:\/\/www.solucominsight.fr\/?p=3766"},"modified":"2015-01-21T09:54:21","modified_gmt":"2015-01-21T08:54:21","slug":"et-si-larchitecture-dentreprise-permettait-enfin-de-briser-la-glace-avec-les-metiers","status":"publish","type":"post","link":"https:\/\/www.riskinsight-wavestone.com\/en\/2013\/05\/et-si-larchitecture-dentreprise-permettait-enfin-de-briser-la-glace-avec-les-metiers\/","title":{"rendered":"Et si l\u2019architecture d\u2019entreprise permettait enfin de briser la glace avec les M\u00e9tiers ?"},"content":{"rendered":"<p align=\"left\"><em>L\u2019architecture d\u2019entreprise a fait son apparition au sein des DSI il y a plusieurs ann\u00e9es, d\u00e9tr\u00f4nant en partie l\u2019urbanisation alors en vigueur. Concr\u00e8tement, \u00e0 quoi sert l\u2019architecture d\u2019entreprise ? Comment mettre en \u0153uvre cette d\u00e9marche ? \u00c0 qui s\u2019adresse-telle? <\/em><\/p>\n<h2 align=\"left\">Architecture d\u2019entreprise\u00a0: 4 raisons d\u2019entreprendre la d\u00e9marche<\/h2>\n<p align=\"left\"><span style=\"color: #333333;\"><strong>1. Rationaliser les co\u00fbts &#8211; <\/strong>C\u2019est l\u00e0 le leitmotiv r\u00e9current, les r\u00e9ponses \u00e9tant \u00e0 adapter au niveau de maturit\u00e9 de l\u2019entreprise. Forte de la r\u00e9ponse globale (infrastructures, applications ou processus de gouvernance) qu\u2019elle peut apporter, l\u2019architecture d\u2019entreprise y contribue fortement. Ce sont n\u00e9anmoins principalement les couches dites \u00ab\u00a0basses \u00bb du SI qui b\u00e9n\u00e9ficient de cette logique de rationalisation gr\u00e2ce \u00e0 la d\u00e9finition et \u00e0 la mise en \u0153uvre de socles techniques. Seules les entreprises les plus matures sauront r\u00e9ussir leurs tentatives de rationalisation des couches dites \u00ab hautes \u00bb (notamment en termes de services m\u00e9tiers comme le promettaient les d\u00e9marches SOA).<\/span><\/p>\n<p align=\"left\"><span style=\"color: #333333;\"><strong>2. Conna\u00eetre l\u2019existant &#8211; <\/strong>Conna\u00eetre son SI acc\u00e9l\u00e8re la phase d\u2019analyse de l\u2019existant pr\u00e9alable \u00e0 toute \u00e9tude dans le cadre d\u2019\u00e9volutions m\u00e9tiers ou technologiques. L\u2019architecture d\u2019entreprise permet d\u2019acc\u00e9der \u00e0 cette vision globale du SI et de l\u2019entreprise et donc de gagner en r\u00e9activit\u00e9. Par exemple, l\u2019\u00e9volution majeure du poste de travail ou de l\u2019infrastructure demande une bonne connaissance du parc applicatif pour d\u00e9finir la strat\u00e9gie de migration.<\/span><\/p>\n<p align=\"left\"><span style=\"color: #333333;\"><strong>3. D\u00e9finir la cible SI &#8211; <\/strong>D\u00e9finir une cible SI pour r\u00e9pondre au mieux aux enjeux strat\u00e9giques de l\u2019entreprise est, malgr\u00e9 les apparences (\u00ab\u00a0c\u2019est trop th\u00e9orique\u00a0!\u00a0\u00bb), un exercice de projection essentiel qui permet de poser les 1ers jalons de r\u00e9alisation du SI qui serviront \u00e0 valider au fur et \u00e0 mesure les orientations des diff\u00e9rents projets.<\/span><\/p>\n<p align=\"left\"><span style=\"color: #333333;\"><strong>4. \u00catre force de proposition vis-\u00e0-vis des M\u00e9tiers &#8211; <\/strong>Restreindre la DSI \u00e0 un ensemble de techniciens est monnaie courante. Pour briser cet <em>a priori<\/em>, la DSI doit apprendre \u00e0 se positionner vis-\u00e0-vis des M\u00e9tiers. L\u2019architecture d\u2019entreprise permet \u00e0 la DSI notamment d\u2019instaurer un dialogue dans la dur\u00e9e (pour mieux comprendre les besoins et contraintes des M\u00e9tiers). Par ce biais, la DSI peut jouer un r\u00f4le de conseil en vulgarisant pour les M\u00e9tiers les nouvelles technologies et leurs apports. Loin du simple fournisseur de solutions techniques, elle devient incubateur d\u2019innovation pour les M\u00e9tiers !<strong>\u00a0<\/strong><\/span><\/p>\n<h2 align=\"left\">L\u2019architecture d\u2019entreprise en pratique : \u00e9tapes de mise en \u0153uvre<\/h2>\n<p align=\"left\"><strong>Il est bien entendu essentiel de d\u00e9finir les contours d\u2019une 1<sup>\u00e8re<\/sup> version de la d\u00e9marche. <\/strong>Une entreprise et son SI sont souvent repr\u00e9sent\u00e9s en couches (strat\u00e9gie, m\u00e9tier, f<span style=\"color: #333333;\">onctionnelle, applicative et technique), l\u2019arch<\/span>itecture d\u2019entreprise se concentrant sur les trois derni\u00e8res. Il est illusoire de vouloir s\u2019attaquer de but en blanc \u00e0 l\u2019ensemble des couches. Aussi faut-il choisir ses combats en se concentrant sur les faiblesses de l\u2019entreprise et sur certains <em>quick wins<\/em>.<\/p>\n<p align=\"left\"><strong>Par la suite, il faut mettre en place une organisation et des process.<\/strong><\/p>\n<ul>\n<li><strong>D\u00e9finir des r\u00f4les cl\u00e9s<\/strong> s\u2019av\u00e8re incontournable. Cr\u00e9er le r\u00f4le d\u2019architecte d\u2019entreprise est indispensable. Il est celui qui saura allier connaissance du SI et du M\u00e9tier, celui qui saura le mieux dialoguer avec toutes les parties prenantes, au-del\u00e0 de son expertise technique. Un deuxi\u00e8me r\u00f4le qu\u2019un sponsor de haut niveau est indispensable pour l\u00e9gitimer ce r\u00f4le dans l\u2019entreprise et l\u2019inscrire dans la dur\u00e9e.<\/li>\n<li><strong>Construire et mettre \u00e0 jour le r\u00e9f\u00e9rentiel<\/strong> est aussi rapidement n\u00e9cessaire. \u00c9l\u00e9ment cl\u00e9 de toute d\u00e9marche d\u2019architecture d\u2019entreprise, il comporte notamment\u00a0un ensemble de cartographies du SI (fonctions SI, applications, services applicatifs, \u00e9l\u00e9ments techniques, objets m\u00e9tiers\u2026) qu\u2019il faudra enrichir, un catalogue des solutions applicatives et techniques r\u00e9f\u00e9renc\u00e9es (ensemble des composants valid\u00e9s et recommand\u00e9s par la DSI pour constituer les r\u00e9ponses SI aux besoins m\u00e9tiers ou techniques) ainsi que diff\u00e9rents patterns d\u2019architecture. Attention n\u00e9anmoins\u00a0: se noyer dans trop de d\u00e9tails est pr\u00e9judiciable \u00e0 la pertinence du r\u00e9f\u00e9rentiel d\u2019architecture et augmente les chances de ne pas \u00eatre \u00e0 jour. \u00c0 l\u2019inverse, un manque d\u2019informations peut nuire aux besoins des projets SI.<\/li>\n<li><strong>Mettre en place un process de veille et d\u2019innovation<\/strong> doit \u00e9galement permettre \u00e0 la DSI de capter les nouveaux usages et d\u2019en expliquer les enjeux et contraintes aux M\u00e9tiers pour ne plus les subir.<\/li>\n<\/ul>\n<p align=\"left\">Seules des <strong>instances de gouvernance transverse<\/strong> sauront par ailleurs soutenir ces diff\u00e9rents process. Il s\u2019agit d\u2019\u00e9tablir un dialogue r\u00e9current avec les M\u00e9tiers avec pour ordre du jour partage des contraintes, pr\u00e9sentation par la DSI des sujets d\u2019innovation technologique (\u00e9conomies r\u00e9alis\u00e9es, diminution du temps de mise en production d\u2019un nouveau produit\u2026), etc.<\/p>\n<p align=\"left\"><strong>Pour autant, tous ces process ne sauront \u00eatre efficaces si la DSI n\u2019arrive pas vendre son projet d\u2019architecture d\u2019entreprise en interne\u00a0! <\/strong>Deux types d\u2019acteurs sont \u00e0 convaincre de l\u2019int\u00e9r\u00eat de la d\u00e9marche\u00a0: les M\u00e9tiers, \u00e0 qui il faut tr\u00e8s clairement expliquer qu\u2019il ne s\u2019agit pas de \u00ab marcher sur leurs plates-bandes \u00bb mais de mieux les accompagner, et les acteurs de la DSI elle-m\u00eame qui, pour certains, pourraient l\u2019interpr\u00e9ter comme une fa\u00e7on d\u2019\u00eatre contr\u00f4l\u00e9s. Il faut au contraire convaincre ces derniers de l\u2019acc\u00e8s \u00e0 des activit\u00e9s strat\u00e9giques \u00e0 plus forte valeur ajout\u00e9e (et comprenant plus d\u2019interactions avec les M\u00e9tiers de l\u2019entreprise).<\/p>\n<p align=\"left\">Aussi, inutile de se poser la question\u00a0! Vous n\u2019avez aujourd\u2019hui plus le choix et devez vous lancer dans une d\u00e9marche d\u2019architecture d\u2019entreprise. Les \u00e9volutions majeures que vit ou va vivre votre entreprise am\u00e8nent naturellement \u00e0 lancer ce type de d\u00e9marche. Autant \u00e9viter la marche forc\u00e9e et accompagner le changement en douceur\u00a0! C\u2019est la garantie d\u2019une am\u00e9lioration sensible de vos relations avec les M\u00e9tiers.<\/p>\n<p align=\"left\">Pour lire d&#8217;avantage sur l&#8217;architecture d&#8217;entreprise <a href=\"http:\/\/www.solucom.fr\/Publications\/Architecture-d-entreprise-1ere-partie-L-architecture-d-entreprise-pourquoi-comment-pour-qui\" target=\"_blank\">cliquez ici<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>L\u2019architecture d\u2019entreprise a fait son apparition au sein des DSI il y a plusieurs ann\u00e9es, d\u00e9tr\u00f4nant en partie l\u2019urbanisation alors en vigueur. Concr\u00e8tement, \u00e0 quoi sert l\u2019architecture d\u2019entreprise ? Comment mettre en \u0153uvre cette d\u00e9marche ? \u00c0 qui s\u2019adresse-telle? Architecture&#8230;<\/p>\n","protected":false},"author":37,"featured_media":6282,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"page-templates\/tmpl-one.php","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[35],"tags":[623,1150,51,105,95,1151,624],"coauthors":[897],"class_list":["post-3766","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-strategie-projets-it","tag-architecture-dentreprise","tag-dialogue-avec-les-metiers","tag-dsi","tag-gouvernance","tag-innovation","tag-process","tag-urbanisation"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Et si l\u2019architecture d\u2019entreprise permettait enfin de briser la glace avec les M\u00e9tiers ?<\/title>\n<meta name=\"description\" content=\"L\u2019architecture d\u2019entreprise a fait son apparition au sein des DSI il y a plusieurs ann\u00e9es, d\u00e9tr\u00f4nant en partie l\u2019urbanisation alors en vigueur. Concr\u00e8tement, \u00e0 quoi sert l\u2019architecture d\u2019entreprise ? Comment mettre en \u0153uvre cette d\u00e9marche ? \u00c0 qui s\u2019adresse-telle?\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.riskinsight-wavestone.com\/en\/2013\/05\/et-si-larchitecture-dentreprise-permettait-enfin-de-briser-la-glace-avec-les-metiers\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Et si l\u2019architecture d\u2019entreprise permettait enfin de briser la glace avec les M\u00e9tiers ?\" \/>\n<meta property=\"og:description\" content=\"L\u2019architecture d\u2019entreprise a fait son apparition au sein des DSI il y a plusieurs ann\u00e9es, d\u00e9tr\u00f4nant en partie l\u2019urbanisation alors en vigueur. Concr\u00e8tement, \u00e0 quoi sert l\u2019architecture d\u2019entreprise ? 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