{"id":2177,"date":"2012-09-03T10:02:02","date_gmt":"2012-09-03T09:02:02","guid":{"rendered":"http:\/\/www.solucominsight.fr\/?p=2177"},"modified":"2015-01-21T09:56:11","modified_gmt":"2015-01-21T08:56:11","slug":"referentiel-darchitecture-dentreprise-vous-ne-pouvez-plus-faire-limpasse","status":"publish","type":"post","link":"https:\/\/www.riskinsight-wavestone.com\/en\/2012\/09\/referentiel-darchitecture-dentreprise-vous-ne-pouvez-plus-faire-limpasse\/","title":{"rendered":"R\u00e9f\u00e9rentiel d\u2019architecture d\u2019entreprise : vous ne pouvez plus faire l\u2019impasse !"},"content":{"rendered":"

Quelle DSI n\u2019a pas investi durant les derni\u00e8res ann\u00e9es pour mettre en place des r\u00e9f\u00e9rentiels d\u2019architecture\u00a0? Malheureusement, ces efforts s\u2019av\u00e8rent souvent vains. Une fois la premi\u00e8re phase d\u2019alimentation r\u00e9alis\u00e9e, les r\u00e9f\u00e9rentiels d\u2019architecture trop compliqu\u00e9s \u00e0 maintenir sont souvent d\u00e9laiss\u00e9s alors qu\u2019ils devraient constituer un v\u00e9ritable acc\u00e9l\u00e9rateur pour les projets de l\u2019entreprise.<\/em><\/p>\n

\u00a0Familles d\u2019\u00e9cueils rencontr\u00e9s<\/h2>\n

\u00c0 cela, plusieurs raisons concomitantes.<\/p>\n

Il n\u2019existe en g\u00e9n\u00e9ral pas un, mais plusieurs, r\u00e9f\u00e9rentiels d\u2019architecture (les architectures applicatives et fonctionnelles dans un premier r\u00e9f\u00e9rentiel, l\u2019architecture technique dans un second r\u00e9f\u00e9rentiel via une CMDB).<\/p>\n

Par ailleurs, de trop nombreux acteurs sont impliqu\u00e9s dans la vie de ces r\u00e9f\u00e9rentiels\u00a0: urbanistes, architectes SI, architectes de domaine, architectes projet, exploitants…, diluant de ce fait les responsabilit\u00e9s.<\/p>\n

Enfin, les processus de mise \u00e0 jour du r\u00e9f\u00e9rentiel ne font souvent pas partie du cycle de vie projet. Seul le bon vouloir des diff\u00e9rents acteurs garantit le maintien d\u2019une information \u00e0 jour et de qualit\u00e9.<\/p>\n

\u00a0Usages d\u2019un r\u00e9f\u00e9rentiel d\u2019architecture d\u2019entreprise<\/h2>\n

Cependant, disposer de r\u00e9f\u00e9rentiels \u00e0 jour et exhaustifs contribue efficacement aux principaux projets SI.<\/p>\n

Dans le cadre d\u2019\u00e9volutions des postes de travail, conna\u00eetre le parc des applications (application client l\u00e9ger, application client lourd, etc.) s\u2019av\u00e8re n\u00e9cessaire pour d\u00e9finir la politique de migration.<\/p>\n

De m\u00eame, les projets d\u2019\u00e9volution de l\u2019infrastructure doivent forc\u00e9ment s\u2019accompagner de l\u2019\u00e9tude de l\u2019impact sur le parc applicatif.<\/p>\n

L\u2019utilisation de r\u00e9f\u00e9rentiels facilite \u00e9galement la phase d\u2019analyse de l\u2019existant pr\u00e9alable \u00e0 toute \u00e9tude dans le cadre d\u2019\u00e9volutions m\u00e9tiers.<\/p>\n

Il est aussi indispensable de connaitre l\u2019impact applicatif et fonctionnel et de le pr\u00e9senter aux m\u00e9tiers concern\u00e9s dans le cas de l\u2019externalisation d\u2019un domaine technique.<\/p>\n

Enfin, pour garantir l\u2019industrialisation des solutions et donc la r\u00e9duction des co\u00fbts, la mise en place de standards architecturaux est un imp\u00e9ratif.<\/p>\n

\u00a0Un contenu bien cibl\u00e9<\/h2>\n

En termes de contenu, plusieurs \u00e9l\u00e9ments sont \u00e0 pr\u00e9voir :<\/p>\n

    \n
  • L\u2019ensemble des cartographies du SI\u00a0: fonctions SI, applications, services applicatifs, \u00e9l\u00e9ments techniques (tels que les services techniques, les infrastructures\u2026). Les cartographies de l\u2019existant constitueront une premi\u00e8re \u00e9tape, qu\u2019il conviendra d\u2019enrichir avec une vision plus prospective.<\/li>\n
  • Le catalogue des solutions applicatives et techniques r\u00e9f\u00e9renc\u00e9es\u00a0: ensemble des composants valid\u00e9s et recommand\u00e9s par la DSI pour constituer les r\u00e9ponses SI aux besoins m\u00e9tiers ou techniques.<\/li>\n
  • Les diff\u00e9rents patterns<\/em> d\u2019architecture\u00a0: typologies d\u2019architecture \u00e0 mettre en place afin de r\u00e9pondre aux besoins SI.<\/li>\n<\/ul>\n

    \u00a0Facteurs cl\u00e9s pour une impl\u00e9mentation r\u00e9ussie<\/h2>\n

    Grande question que celle du niveau de granularit\u00e9 des informations contenues dans ces r\u00e9f\u00e9rentiels d\u2019architecture d\u2019entreprise. Se noyer dans un niveau trop important de d\u00e9tail est pr\u00e9judiciable \u00e0 la pertinence du r\u00e9f\u00e9rentiel et augmente ses chances de ne pas \u00eatre \u00e0 jour. A contrario, un manque d\u2019informations peut nuire aux besoins notamment des projets SI et de ce fait n\u2019avoir plus d\u2019utilit\u00e9.<\/p>\n

    Quelques recommandations pour profiter au mieux de ces outils au service des projets SI\u00a0:<\/p>\n

    Premi\u00e8re condition, accepter d\u2019avoir un outillage multiple… mais mettre en place des processus qui garantissent les corr\u00e9lations et les mises \u00e0 jour des informations.<\/p>\n

    Seconde condition, lancer les premiers chantiers sur un sous-ensemble coh\u00e9rent (architectures applicative et technique ou architectures fonctionnelle et applicative).<\/p>\n

    Enfin, derni\u00e8re condition de succ\u00e8s, travailler \u00e0 l’insertion du process de d\u00e9finition de l’architecture dans le cycle projet (a minima pr\u00e9voir les points de contr\u00f4le).<\/p>\n

    A l’heure o\u00f9 les DSI se targuent d’\u00eatre industrielles, innovantes,… bref, \u00e0 l’\u00e9tat de l’art, il est temps de mettre en place et faire vivre ces r\u00e9f\u00e9rentiels d\u2019architecture d\u2019entreprise !<\/p>\n","protected":false},"excerpt":{"rendered":"

    Quelle DSI n\u2019a pas investi durant les derni\u00e8res ann\u00e9es pour mettre en place des r\u00e9f\u00e9rentiels d\u2019architecture\u00a0? Malheureusement, ces efforts s\u2019av\u00e8rent souvent vains. Une fois la premi\u00e8re phase d\u2019alimentation r\u00e9alis\u00e9e, les r\u00e9f\u00e9rentiels d\u2019architecture trop compliqu\u00e9s \u00e0 maintenir sont souvent d\u00e9laiss\u00e9s alors…<\/p>\n","protected":false},"author":28,"featured_media":6344,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"page-templates\/tmpl-one.php","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[35],"tags":[623,120,625,624],"coauthors":[797],"class_list":["post-2177","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-strategie-projets-it","tag-architecture-dentreprise","tag-architecture-si-2","tag-referentiel","tag-urbanisation"],"acf":[],"yoast_head":"\nR\u00e9f\u00e9rentiel d\u2019architecture d\u2019entreprise : vous ne pouvez plus faire l\u2019impasse ! - RiskInsight<\/title>\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\/2012\/09\/referentiel-darchitecture-dentreprise-vous-ne-pouvez-plus-faire-limpasse\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"R\u00e9f\u00e9rentiel d\u2019architecture d\u2019entreprise : vous ne pouvez plus faire l\u2019impasse ! - RiskInsight\" \/>\n<meta property=\"og:description\" content=\"Quelle DSI n\u2019a pas investi durant les derni\u00e8res ann\u00e9es pour mettre en place des r\u00e9f\u00e9rentiels d\u2019architecture\u00a0? Malheureusement, ces efforts s\u2019av\u00e8rent souvent vains. Une fois la premi\u00e8re phase d\u2019alimentation r\u00e9alis\u00e9e, les r\u00e9f\u00e9rentiels d\u2019architecture trop compliqu\u00e9s \u00e0 maintenir sont souvent d\u00e9laiss\u00e9s alors...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.riskinsight-wavestone.com\/2012\/09\/referentiel-darchitecture-dentreprise-vous-ne-pouvez-plus-faire-limpasse\/\" \/>\n<meta property=\"og:site_name\" content=\"RiskInsight\" \/>\n<meta property=\"article:published_time\" content=\"2012-09-03T09:02:02+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2015-01-21T08:56:11+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.riskinsight-wavestone.com\/wp-content\/uploads\/2012\/10\/Cybercriminalite1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"573\" \/>\n\t<meta property=\"og:image:height\" content=\"214\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Emmanuel Arnaudin\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Emmanuel Arnaudin\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.riskinsight-wavestone.com\/2012\/09\/referentiel-darchitecture-dentreprise-vous-ne-pouvez-plus-faire-limpasse\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.riskinsight-wavestone.com\/2012\/09\/referentiel-darchitecture-dentreprise-vous-ne-pouvez-plus-faire-limpasse\/\"},\"author\":{\"name\":\"Emmanuel Arnaudin\",\"@id\":\"https:\/\/www.riskinsight-wavestone.com\/en\/#\/schema\/person\/cef9650be7f779508e65ef18170890cd\"},\"headline\":\"R\u00e9f\u00e9rentiel d\u2019architecture d\u2019entreprise : vous ne pouvez plus faire l\u2019impasse !\",\"datePublished\":\"2012-09-03T09:02:02+00:00\",\"dateModified\":\"2015-01-21T08:56:11+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.riskinsight-wavestone.com\/2012\/09\/referentiel-darchitecture-dentreprise-vous-ne-pouvez-plus-faire-limpasse\/\"},\"wordCount\":689,\"publisher\":{\"@id\":\"https:\/\/www.riskinsight-wavestone.com\/en\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.riskinsight-wavestone.com\/2012\/09\/referentiel-darchitecture-dentreprise-vous-ne-pouvez-plus-faire-limpasse\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.riskinsight-wavestone.com\/wp-content\/uploads\/2012\/10\/Cybercriminalite1.jpg\",\"keywords\":[\"architecture d\u2019entreprise\",\"architecture Si\",\"r\u00e9f\u00e9rentiel\",\"urbanisation\"],\"articleSection\":[\"M\u00e9tiers - Strat\u00e9gie & projets IT\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.riskinsight-wavestone.com\/2012\/09\/referentiel-darchitecture-dentreprise-vous-ne-pouvez-plus-faire-limpasse\/\",\"url\":\"https:\/\/www.riskinsight-wavestone.com\/2012\/09\/referentiel-darchitecture-dentreprise-vous-ne-pouvez-plus-faire-limpasse\/\",\"name\":\"R\u00e9f\u00e9rentiel d\u2019architecture d\u2019entreprise : vous ne pouvez plus faire l\u2019impasse ! 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