{"id":4975,"date":"2014-01-29T09:06:14","date_gmt":"2014-01-29T08:06:14","guid":{"rendered":"http:\/\/www.solucominsight.fr\/?p=4975"},"modified":"2015-06-15T14:26:48","modified_gmt":"2015-06-15T13:26:48","slug":"les-cles-dune-bonne-strategie-cloud-combiner-approche-tactique-et-vision-strategique","status":"publish","type":"post","link":"https:\/\/www.riskinsight-wavestone.com\/en\/2014\/01\/les-cles-dune-bonne-strategie-cloud-combiner-approche-tactique-et-vision-strategique\/","title":{"rendered":"Les cl\u00e9s d\u2019une bonne strat\u00e9gie Cloud : combiner approche tactique et vision strat\u00e9gique"},"content":{"rendered":"<p><em>M\u00eame si de grandes tendances se d\u00e9gagent aujourd\u2019hui, le rythme et le p\u00e9rim\u00e8tre d\u2019adoption du Cloud sont propres \u00e0 chaque entreprise : il n\u2019y a pas de strat\u00e9gie universelle Cloud. Comme l\u2019a dit Lao Tseu, &#8220;un voyage de 1000 km commence toujours par un pas&#8221;. Mais comment faire pour savoir o\u00f9 aller et comment\u00a0? Existe-t-il des bonnes pratiques en la mati\u00e8re\u00a0? Lesquelles devrions-nous adopter\u00a0?<\/em><\/p>\n<h2>Des choix tactiques \u00e0 court terme assez homog\u00e8nes\u2026<\/h2>\n<p align=\"left\">Il n\u2019est pas surprenant aujourd\u2019hui de voir bon nombre de DSI s\u2019orienter vers les m\u00eames services <em>Cloud<\/em>, comme la mise \u00e0 disposition de machines virtuelles ou de plateformes web, ou encore la messagerie en mode SaaS. Les travaux d\u00e9j\u00e0 r\u00e9alis\u00e9s en mati\u00e8re de virtualisation des infrastructures, d\u2019externalisation des op\u00e9rations IT et de standardisation des architectures web simplifient du reste l\u2019\u00e9volution vers ce type de services.<\/p>\n<p align=\"left\">D\u00e9ployer de tels services rel\u00e8ve plut\u00f4t d\u2019une approche tactique, qui permet \u00e0 la DSI d\u2019obtenir des succ\u00e8s rapides et de d\u00e9montrer sa capacit\u00e9 \u00e0 offrir des services de type <em>Cloud<\/em>, tout en commen\u00e7ant \u00e0 se confronter \u00e0 ses impacts et \u00e0 la r\u00e9alit\u00e9 des offres du march\u00e9.<\/p>\n<h2 align=\"left\">\u00a0\u2026en attendant une strat\u00e9gie Cloud plus sp\u00e9cifique<\/h2>\n<p align=\"left\">Ces services ne constituent toutefois qu\u2019une 1<sup>\u00e8re<\/sup> \u00e9tape, la strat\u00e9gie <em>Cloud<\/em> de chaque entreprise devant se b\u00e2tir sur une analyse plus fine du patrimoine SI de l\u2019entreprise, application par application, comme l\u2019illustre notre \u00ab\u00a0arbre de d\u00e9cision <em>Cloud<\/em>\u00a0\u00bb (voir sch\u00e9ma).<\/p>\n<p><a href=\"http:\/\/www.solucominsight.fr\/2014\/01\/les-cles-dune-bonne-strategie-cloud-combiner-approche-tactique-et-vision-strategique\/arbre-de-decision-cloud-solucominsight\/\" rel=\"attachment wp-att-4977\"><img loading=\"lazy\" decoding=\"async\" class=\" wp-image-4977\" title=\"arbre de decision Cloud \" src=\"http:\/\/www.solucominsight.fr\/wp-content\/uploads\/2014\/01\/arbre-de-decision-Cloud-SolucomINSIGHT.png\" alt=\"\" width=\"692\" height=\"446\" srcset=\"https:\/\/www.riskinsight-wavestone.com\/wp-content\/uploads\/2014\/01\/arbre-de-decision-Cloud-SolucomINSIGHT.png 865w, https:\/\/www.riskinsight-wavestone.com\/wp-content\/uploads\/2014\/01\/arbre-de-decision-Cloud-SolucomINSIGHT-296x191.png 296w, https:\/\/www.riskinsight-wavestone.com\/wp-content\/uploads\/2014\/01\/arbre-de-decision-Cloud-SolucomINSIGHT-60x39.png 60w\" sizes=\"auto, (max-width: 692px) 100vw, 692px\" \/><\/a><\/p>\n<p align=\"left\">\u00a0Cette analyse peut se faire d\u00e8s \u00e0 pr\u00e9sent <a title=\"SolucomINSIGHT - Aller vers le Cloud oui, mais comment l\u00e9gitimer la DSI ?\" href=\" http:\/\/www.solucominsight.fr\/2014\/01\/aller-vers-le-cloud-oui-mais-comment-legitimer-la-dsi\" target=\"_blank\">par le biais de l\u2019incubateur <em>Cloud<\/em><\/a> qui, au fur et \u00e0 mesure qu\u2019il identifiera les p\u00e9rim\u00e8tres \u00e9ligibles, sera en mesure de b\u00e2tir un catalogue de services cibles et une <em>roadmap<\/em> permettant de rythmer l\u2019adoption des services <em>Cloud<\/em>. Voici les grandes \u00e9tapes de la d\u00e9marche \u00e0 suivre pour y parvenir :<\/p>\n<ul>\n<li>Identifier les applications et services IT \u00e9ligibles au <em>Cloud<\/em> en \u00e9valuant la valeur apport\u00e9e \u00e0 l\u2019entreprise, le niveau de confidentialit\u00e9 des donn\u00e9es manipul\u00e9es et le niveau de sp\u00e9cificit\u00e9 du syst\u00e8me ;<\/li>\n<li>Rechercher des services SaaS pour les applications ou services dont l\u2019usage peut \u00eatre standardis\u00e9 et dont la criticit\u00e9 (business ou s\u00e9curit\u00e9) n\u2019est pas bloquante pour envisager une \u00e9volution vers le<em> Cloud<\/em> ;<\/li>\n<li>Envisager le passage au PaaS ou au IaaS lorsqu\u2019aucun service SaaS n\u2019existe sur le march\u00e9 ;<\/li>\n<li>Renforcer le niveau de standardisation des socles logiciels et techniques des applications aujourd\u2019hui trop sp\u00e9cifiques \u00e0 l\u2019entreprise pour pouvoir trouver leur \u00e9quivalent dans le Cloud.<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p align=\"left\">Le march\u00e9 \u00e9tant dans une dynamique d\u2019\u00e9volution rapide et perp\u00e9tuelle, cette approche est \u00e0 r\u00e9it\u00e9rer r\u00e9guli\u00e8rement et \u00e0 enrichir d\u2019une veille permanente sur les acteurs et les offres <em>Cloud<\/em>. Au-del\u00e0 de la maturit\u00e9 des offres du march\u00e9, des crit\u00e8res plus sp\u00e9cifiques \u00e0 l\u2019entreprise peuvent influer sur son rythme d\u2019adoption du <em>Cloud<\/em>. Ainsi, un niveau \u00e9lev\u00e9 d\u2019industrialisation et d\u2019externalisation facilitera et acc\u00e9l\u00e9rera la transition vers des offres <em>Cloud<\/em>. De m\u00eame, l\u2019arriv\u00e9e \u00e0 \u00e9ch\u00e9ance de contrats existants ou l\u2019obsolescence de certaines solutions ou applications seront des opportunit\u00e9s d\u2019\u00e9volution vers le <em>Cloud<\/em>, sans oublier bien s\u00fbr des ruptures plus fortes dans la strat\u00e9gie de l\u2019entreprise (forte r\u00e9duction des co\u00fbts, fusion ou d\u00e9simbrication de pans entiers du SI&#8230;).<\/p>\n<p align=\"left\">Autant de facteurs qui, bien pris en compte, permettront d\u2019aboutir \u00e0 une strat\u00e9gie Cloud sp\u00e9cifique et efficace !<\/p>\n<h2 align=\"left\">Une cible hybride \u00e0 anticiper<\/h2>\n<p align=\"left\">De m\u00eame qu\u2019il n\u2019existe pas de strat\u00e9gie<em> Cloud<\/em> unique applicable \u00e0 toute entreprise, il est impossible d\u2019identifier l\u2019int\u00e9gralit\u00e9 des services qui s\u2019appuieront sur des offres <em>Cloud<\/em> \u00e0 moyen terme, tant le march\u00e9 est dynamique aujourd\u2019hui. En revanche, une chose est s\u00fbre : <strong><a title=\"SolucomINSIGHT - le Cloud : quelle r\u00e9alit\u00e9 march\u00e9 derri\u00e8re les nuages ?\" href=\"http:\/\/www.solucominsight.fr\/2013\/12\/le-cloud-quelle-realite-marche-derriere-les-nuages\/\" target=\"_blank\">le SI cible sera hybride<\/a> <\/strong><strong>et<\/strong> <strong>les services <\/strong><strong><em>Cloud<\/em> <\/strong><strong>devront \u00eatre parfaitement<\/strong> <strong>int\u00e9gr\u00e9s au SI traditionnel.<\/strong><\/p>\n<p align=\"left\">Alors pr\u00e9parez-vous ! En parall\u00e8le du d\u00e9ploiement des premiers services <em>Cloud<\/em>, plusieurs chantiers techniques et organisationnels transverses sont \u00e0 lancer d\u00e8s maintenant. Ces chantiers doivent permettre de ma\u00eetriser la prolif\u00e9ration des services <em>Cloud<\/em> et de <strong>faire face \u00e0 un SI<\/strong> <strong>de plus en plus \u00e9clat\u00e9, tant g\u00e9ographiquement<\/strong> <strong>qu\u2019en termes de responsabilit\u00e9.<\/strong> Il s\u2019agit en premier lieu de d\u00e9finir un cadre d\u2019adoption des services <em>Cloud<\/em> (r\u00e8gles d\u2019\u00e9ligibilit\u00e9, politique de s\u00e9curit\u00e9, clauses juridiques et contractuelles) et de b\u00e2tir un socle d\u2019int\u00e9gration et de pilotage de ces services (architecture d\u2019interconnexion, portail(s) self-service, <em>Cloud Management Platform<\/em>\u2026). Ces \u00e9volutions majoritairement technologiques doivent s\u2019accompagner d\u2019une red\u00e9finition des modalit\u00e9s de pilotage \u00e9conomique des services IT et de la d\u00e9finition d\u2019un plan d\u2019\u00e9volution des comp\u00e9tences, pour que la transition vers des services IT \u00e0 l\u2019usage s\u2019op\u00e8re en douceur au sein de l\u2019entreprise, tant pour la DSI que pour les Directions M\u00e9tiers.<\/p>\n<p align=\"left\">Ainsi,<a title=\"Synth\u00e8se Solucom - DSI, pr\u00e9parez-vous \u00e0 devenir Cloud broker !\" href=\"http:\/\/www.solucom.fr\/wp-content\/uploads\/2013\/12\/Synthese_CLOUD_-janvier-20141.pdf\" target=\"_blank\"> la DSI se positionnera peu \u00e0 peu comme un <em><strong>Cloud broker<\/strong><\/em><\/a>, proposant \u00e0 ses utilisateurs (clients finaux, collaborateurs de l\u2019entreprise ou \u00e9quipes projet IT) des services accessibles au travers d\u2019un ou plusieurs portails et offrant les moyens techniques (int\u00e9gration, s\u00e9curit\u00e9, pilotage) et humains (conseil, support, accompagnement au changement) n\u00e9cessaires pour garantir l\u2019usage de ces services dans de bonnes conditions.<\/p>\n<p align=\"left\">Ces chantiers transverses doivent faire partie int\u00e9grante de la strat\u00e9gie Cloud, au risque de ne pouvoir garantir la coh\u00e9rence du SI \u00e0 moyen terme\u2026<\/p>\n","protected":false},"excerpt":{"rendered":"<p>M\u00eame si de grandes tendances se d\u00e9gagent aujourd\u2019hui, le rythme et le p\u00e9rim\u00e8tre d\u2019adoption du Cloud sont propres \u00e0 chaque entreprise : il n\u2019y a pas de strat\u00e9gie universelle Cloud. Comme l\u2019a dit Lao Tseu, &#8220;un voyage de 1000 km&#8230;<\/p>\n","protected":false},"author":36,"featured_media":2461,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"page-templates\/tmpl-one.php","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[35],"tags":[44,1515,1516,447],"coauthors":[845],"class_list":["post-4975","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-strategie-projets-it","tag-cloud-computing","tag-responsabilite","tag-si-hybride","tag-strategie"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Les cl\u00e9s d\u2019une bonne strat\u00e9gie Cloud : combiner approche tactique et vision strat\u00e9gique<\/title>\n<meta name=\"description\" content=\"M\u00eame si de grandes tendances se d\u00e9gagent aujourd\u2019hui, le rythme et le p\u00e9rim\u00e8tre d\u2019adoption du Cloud sont propres \u00e0 chaque entreprise : il n\u2019y a pas de strat\u00e9gie universelle Cloud. Comme l\u2019a dit Lao Tseu, &quot;un voyage de 1000 km commence toujours par un pas&quot;. Mais comment faire pour savoir o\u00f9 aller et comment ? Existe-t-il des bonnes pratiques en la mati\u00e8re ? 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