{"id":2259,"date":"2009-12-07T20:46:39","date_gmt":"2009-12-07T19:46:39","guid":{"rendered":"http:\/\/www.ziserman.com\/blog\/?p=2259"},"modified":"2009-12-07T20:46:39","modified_gmt":"2009-12-07T19:46:39","slug":"systeme-dinformation-les-effets-de-bords-dun-prix-tres-eleve","status":"publish","type":"post","link":"https:\/\/www.ziserman.com\/blog\/2009\/12\/07\/systeme-dinformation-les-effets-de-bords-dun-prix-tres-eleve\/","title":{"rendered":"Syst\u00e8me d&rsquo;information : Les effets de bords d&rsquo;un prix tr\u00e8s \u00e9lev\u00e9"},"content":{"rendered":"<p><em>Ce billet concerne plut\u00f4t les entreprises de taille moyenne \u00e0 grande.<\/em><\/p>\n<p>J&rsquo;ai d\u00e9j\u00e0 parl\u00e9 dans des billets pr\u00e9c\u00e9dents, de l&rsquo;effet de bord d&rsquo;un projet IT tr\u00e8s tr\u00e8s cher :<\/p>\n<p>En g\u00e9n\u00e9ral, de tels projets sont valid\u00e9s par la direction g\u00e9n\u00e9rale.<\/p>\n<p>Et, comme par magie, le projet est \u00ab\u00a0toujours\u00a0\u00bb un succ\u00e8s.<\/p>\n<p>Pourquoi ?<\/p>\n<p>Parce que si ce n&rsquo;\u00e9tait pas le cas, la direction serait \u00ab\u00a0challeng\u00e9\u00a0\u00bb.<\/p>\n<p>Donc, m\u00eame si dans la pratique c&rsquo;est pas si rose que \u00e7a, on va s&rsquo;arranger pour dire que \u00ab\u00a0tout va bien\u00a0\u00bb.<\/p>\n<p>Qui ira vraiment v\u00e9rifier ?<\/p>\n<p>Les \u00e9quipes vont se d\u00e9brouiller, jongler entre excel et des applications instables, la communication sera : \u00ab\u00a0on track\u00a0\u00bb.<\/p>\n<p>Et bien parfois, un autre sc\u00e9nario se produit : la mort du projet.<\/p>\n<p>Le sc\u00e9nario est le suivant :<\/p>\n<p>Un projet \u00ab\u00a0mastodonte\u00a0\u00bb est lanc\u00e9.<\/p>\n<p>A un moment donn\u00e9, quelques ann\u00e9es plus tard, un dirigeant, n&rsquo;ayant pas tremp\u00e9 dans la d\u00e9cision, regarde le truc, et fait une rapide analyse :<\/p>\n<ul>\n<li>\u00e7a a co\u00fbt\u00e9 combien ?<\/li>\n<li>\u00e7a a rapport\u00e9 quoi ?<\/li>\n<\/ul>\n<p>Et l\u00e0, rapidement, la d\u00e9cision va \u00eatre prise d&rsquo;arr\u00eater le projet.<\/p>\n<p>le projet est donc mort d&rsquo;avoir co\u00fbt\u00e9 trop cher, au d\u00e9marrage, et donc d&rsquo;avoir, les premi\u00e8res ann\u00e9es, un bilan \u00ab\u00a0ind\u00e9fendable\u00a0\u00bb.<\/p>\n<p>Quelle est la diff\u00e9rence entre les deux sc\u00e9narios ?<\/p>\n<p>Finalement, dans le deuxi\u00e8me projet, on peut se dire que la d\u00e9cision n&rsquo;a pas \u00e9t\u00e9 prise assez haut, et que le projet n&rsquo;a pas \u00e9t\u00e9 vendu assez cher ;).<\/p>\n<p>Plus s\u00e9rieusement, c&rsquo;est pour moi un \u00e9l\u00e9ment compl\u00e9mentaire pour pousser des solutions par \u00e9tapes, avec une mont\u00e9 en puissance tr\u00e8s progressive.<\/p>\n<p>Il faut \u00e9viter \u00e0 tout pris les projets \u00ab\u00a0cath\u00e9drale\u00a0\u00bb, qui coute cher, sont long \u00e0 faire, et ont des r\u00e9sultats tr\u00e8s incertains.<\/p>\n<p>Il vaut tellement mieux privil\u00e9gier une approche \u00ab\u00a0agile\u00a0\u00bb, par \u00e9tapes.<\/p>\n<p>Mais pour cela, les mentalit\u00e9s doivent \u00e9norm\u00e9ment \u00e9voluer !<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ce billet concerne plut\u00f4t les entreprises de taille moyenne \u00e0 grande. J&rsquo;ai d\u00e9j\u00e0 parl\u00e9 dans des billets pr\u00e9c\u00e9dents, de l&rsquo;effet de bord d&rsquo;un projet IT tr\u00e8s tr\u00e8s cher : En g\u00e9n\u00e9ral, de tels projets sont valid\u00e9s par la direction g\u00e9n\u00e9rale. Et, comme par magie, le projet est \u00ab\u00a0toujours\u00a0\u00bb un succ\u00e8s. Pourquoi ? Parce que si [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[2],"tags":[379,139],"class_list":["post-2259","post","type-post","status-publish","format-standard","hentry","category-e-commerce","tag-araok","tag-systeme-dinformation"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Syst\u00e8me d&#039;information : Les effets de bords d&#039;un prix tr\u00e8s \u00e9lev\u00e9 - Ziserman.com<\/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.ziserman.com\/blog\/2009\/12\/07\/systeme-dinformation-les-effets-de-bords-dun-prix-tres-eleve\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Syst\u00e8me d&#039;information : Les effets de bords d&#039;un prix tr\u00e8s \u00e9lev\u00e9 - Ziserman.com\" \/>\n<meta property=\"og:description\" content=\"Ce billet concerne plut\u00f4t les entreprises de taille moyenne \u00e0 grande. J&rsquo;ai d\u00e9j\u00e0 parl\u00e9 dans des billets pr\u00e9c\u00e9dents, de l&rsquo;effet de bord d&rsquo;un projet IT tr\u00e8s tr\u00e8s cher : En g\u00e9n\u00e9ral, de tels projets sont valid\u00e9s par la direction g\u00e9n\u00e9rale. Et, comme par magie, le projet est \u00ab\u00a0toujours\u00a0\u00bb un succ\u00e8s. Pourquoi ? 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