{"id":81533,"date":"2022-11-23T09:00:54","date_gmt":"2022-11-23T08:00:54","guid":{"rendered":"https:\/\/powell-software.com\/?p=81533"},"modified":"2023-03-30T13:22:09","modified_gmt":"2023-03-30T12:22:09","slug":"on-premise-vs-saas","status":"publish","type":"post","link":"https:\/\/powell-software.com\/fr\/resources\/blog\/on-premise-vs-saas\/","title":{"rendered":"On premise vs SaaS : comment choisir ?"},"content":{"rendered":"<h2 style=\"text-align: center;\">Qu\u2019est-ce qu\u2019une solution on premise ?<\/h2>\n<p style=\"text-align: justify;\">Une <strong>solution on premise <\/strong>d\u00e9signe un logiciel h\u00e9berg\u00e9 localement par l\u2019entreprise sur ses propres serveurs. Il s\u2019agit d\u2019un mode d\u2019h\u00e9bergement largement r\u00e9pandu. Celui-ci permet de conserver les donn\u00e9es au sein de l\u2019entreprise, mais n\u00e9cessite du mat\u00e9riel et une \u00e9quipe d\u00e9di\u00e9e.<\/p>\n<p style=\"text-align: justify;\">L\u2019achat du programme se fait \u00e0 un \u00e9diteur de logiciel sous forme de licence. Puis, le programme doit \u00eatre d\u00e9ploy\u00e9 sur un serveur interne avec un param\u00e9trage minutieux qui demande une expertise. L\u2019acc\u00e8s au <strong>logiciel on premise<\/strong> s\u2019effectue sur les postes de travail de l\u2019entreprise. Ensuite, une \u00e9quipe informatique doit veiller au bon fonctionnement du programme en appliquant les correctifs n\u00e9cessaires et les mises \u00e0 jour. La <strong>s\u00e9curit\u00e9 des donn\u00e9es<\/strong> est \u00e9galement de son ressort.<\/p>\n<p>&nbsp;<\/p>\n<h2 style=\"text-align: center;\">Qu\u2019est-ce qu\u2019une solution SaaS ?<\/h2>\n<p style=\"text-align: justify;\"><img fetchpriority=\"low\" loading=\"lazy\" decoding=\"async\" class=\" wp-image-81546 alignleft\" src=\"https:\/\/powell-software.com\/wp-content\/uploads\/2022\/10\/solution-saas-480x360.jpg\" alt=\"solution saas\" width=\"359\" height=\"269\" srcset=\"https:\/\/powell-software.com\/wp-content\/uploads\/2022\/10\/solution-saas-480x360.jpg 480w, https:\/\/powell-software.com\/wp-content\/uploads\/2022\/10\/solution-saas-768x576.jpg 768w, https:\/\/powell-software.com\/wp-content\/uploads\/2022\/10\/solution-saas.jpg 1183w\" sizes=\"auto, (max-width: 359px) 100vw, 359px\" \/>Le terme SaaS se traduit par <strong>software as a service<\/strong>, c\u2019est-\u00e0-dire <strong>logiciel en tant que service<\/strong>. Concr\u00e8tement, le programme est <strong>d\u00e9localis\u00e9 et h\u00e9berg\u00e9<\/strong> sur le cloud. Son acc\u00e8s est assur\u00e9 par une connexion internet depuis n\u2019importe quel lieu.<\/p>\n<p style=\"text-align: justify;\">Il n\u2019y a pas de licence \u00e0 acheter. L\u2019acc\u00e8s au logiciel SaaS est soumis \u00e0 un <strong>abonnement mensuel <\/strong>ou annuel. La maintenance et la s\u00e9curisation des donn\u00e9es sont incluses dans l\u2019abonnement et assur\u00e9es par le prestataire. Les mises \u00e0 jour et les correctifs se font directement sur le cloud. L\u2019utilisateur peut travailler depuis n\u2019importe quel appareil connect\u00e9 gr\u00e2ce \u00e0 ses identifiants. Les droits d\u2019acc\u00e8s peuvent \u00eatre g\u00e9r\u00e9s directement depuis l\u2019interface.<\/p>\n<p>&nbsp;<\/p>\n<h2 style=\"text-align: center;\">On premise vs SaaS : avantages et inconv\u00e9nients<\/h2>\n<p style=\"text-align: justify;\">Chacune de ces solutions a ses <strong>avantages et ses inconv\u00e9nients<\/strong> \u00e0 adapter \u00e0 vos propres besoins.<\/p>\n<p><img fetchpriority=\"low\" loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-81554 aligncenter\" src=\"https:\/\/powell-software.com\/wp-content\/uploads\/2022\/10\/pro-cons-saas-vs-on-premise-480x320.jpg\" alt=\"pro cons saas vs on premise\" width=\"480\" height=\"320\" srcset=\"https:\/\/powell-software.com\/wp-content\/uploads\/2022\/10\/pro-cons-saas-vs-on-premise-480x320.jpg 480w, https:\/\/powell-software.com\/wp-content\/uploads\/2022\/10\/pro-cons-saas-vs-on-premise-1200x800.jpg 1200w, https:\/\/powell-software.com\/wp-content\/uploads\/2022\/10\/pro-cons-saas-vs-on-premise-768x512.jpg 768w, https:\/\/powell-software.com\/wp-content\/uploads\/2022\/10\/pro-cons-saas-vs-on-premise.jpg 1254w\" sizes=\"auto, (max-width: 480px) 100vw, 480px\" \/><\/p>\n<p>&nbsp;<\/p>\n<h3 style=\"text-align: justify;\">Pour une solution on premise<\/h3>\n<p style=\"text-align: justify;\">Les <strong>logiciels en mode on premise <\/strong>demandent des moyens financiers et humains cons\u00e9quents. L\u2019investissement comprend l\u2019achat de la licence, mais \u00e9galement d\u2019un serveur. Cet \u00e9quipement est co\u00fbteux et n\u00e9cessite une maintenance interne. Ainsi, une \u00e9quipe informatique doit s\u2019occuper du d\u00e9ploiement du logiciel et veiller \u00e0 son fonctionnement et \u00e0 la s\u00e9curisation des donn\u00e9es.<\/p>\n<p style=\"text-align: justify;\">De plus, ce type de programme n\u2019est pas toujours simple \u00e0 prendre en main et requiert parfois une formation pour les utilisateurs. Cela occasionne donc des <strong>frais suppl\u00e9mentaires<\/strong>.<\/p>\n<p style=\"text-align: justify;\">L\u2019utilisation d\u2019un programme on premise fonctionne sans connexion internet. En cas de coupure des services web, l\u2019entreprise ne sera pas impact\u00e9e. Quant aux donn\u00e9es, elles restent dans l\u2019entreprise puisqu\u2019elles sont h\u00e9berg\u00e9es sur un serveur local. Pour de nombreux chefs d\u2019entreprise qui craignent de voir leurs donn\u00e9es stock\u00e9es en dehors de leurs murs, cela repr\u00e9sente un avantage.<\/p>\n<p style=\"text-align: justify;\">Sur le <strong>long terme<\/strong>, l\u2019achat d\u2019une licence perp\u00e9tuelle para\u00eet attractif, mais la solution a des limites. Si l\u2019\u00e9diteur de logiciel d\u00e9cide de mettre un terme a son programme, vous vous heurterez \u00e0 plusieurs probl\u00e8mes. D\u2019une part, lorsque l\u2019EOL (End Of Life) d\u2019un programme est annonc\u00e9e, cela implique la disparition des mises \u00e0 jour. Or, un logiciel de <strong>gestion de projet<\/strong> demeure op\u00e9rationnel et efficace s\u2019il a la possibilit\u00e9 d\u2019\u00e9voluer. Lorsque les mises \u00e0 niveau ne sont plus<strong> prises en charge<\/strong> et qu\u2019il n\u2019y a plus de correctifs, le produit peut devenir obsol\u00e8te. Par ailleurs, il est d\u00e9conseill\u00e9 de continuer \u00e0 l\u2019utiliser, car des failles de s\u00e9curit\u00e9 peuvent appara\u00eetre.<\/p>\n<p>&nbsp;<\/p>\n<h3 style=\"text-align: justify;\">Pour une solution SaaS<\/h3>\n<p style=\"text-align: justify;\">En mode SaaS, le fonctionnement est tr\u00e8s diff\u00e9rent. La connexion internet est indispensable pour acc\u00e9der \u00e0 l\u2019interface et aux donn\u00e9es. De prime abord, si cela peut para\u00eetre contraignant, c\u2019est plut\u00f4t un gage de libert\u00e9. \u00c0 l\u2019heure de la mobilit\u00e9 et du t\u00e9l\u00e9travail, acc\u00e9der \u00e0 un logiciel depuis n\u2019importe quel endroit est un avantage. Faciles \u00e0 prendre en main, les logiciels SaaS sont compatibles avec tous types d\u2019appareils. Aucune formation n\u2019est requise pour les utiliser.<\/p>\n<p style=\"text-align: justify;\">La <strong>s\u00e9curisation des donn\u00e9es<\/strong> est une question essentielle. Si celles-ci sont h\u00e9berg\u00e9es en dehors de l\u2019entreprise, le cloud des prestataires est g\u00e9n\u00e9ralement hautement s\u00e9curis\u00e9. Comme ce sont eux qui assurent la maintenance, les mises \u00e0 jour seront faites r\u00e9guli\u00e8rement sans intervention de votre part. L\u2019utilisation d\u2019un logiciel SaaS ne requiert donc ni mat\u00e9riel sp\u00e9cifique, ni moyens humains.<\/p>\n<p style=\"text-align: justify;\">C\u2019est donc un mod\u00e8le \u00e9conomique. L\u2019abonnement r\u00e9gl\u00e9 <strong>mensuellement ou annuellement<\/strong> comprend l\u2019acc\u00e8s au logiciel, la sauvegarde, le stockage des donn\u00e9es et les mises \u00e0 jour.<\/p>\n<p><!--HubSpot Call-to-Action Code --><span id=\"hs-cta-wrapper-c8ce86f7-8b19-454e-86bd-b2bcf3b28c75\" class=\"hs-cta-wrapper\"><span id=\"hs-cta-c8ce86f7-8b19-454e-86bd-b2bcf3b28c75\" class=\"hs-cta-node hs-cta-c8ce86f7-8b19-454e-86bd-b2bcf3b28c75\"><!-- [if lte IE 8]>\n\n\n<div id=\"hs-cta-ie-element\"><\/div>\n\n\n<![endif]--><a href=\"https:\/\/hubspot-cta-redirect-eu1-prod.s3.amazonaws.com\/cta\/redirect\/26290363\/c8ce86f7-8b19-454e-86bd-b2bcf3b28c75\" target=\"_blank\" rel=\"noopener\"><img fetchpriority=\"low\" loading=\"lazy\" decoding=\"async\" id=\"hs-cta-img-c8ce86f7-8b19-454e-86bd-b2bcf3b28c75\" class=\"hs-cta-img\" style=\"border-width: 0px;\" src=\"https:\/\/hubspot-no-cache-eu1-prod.s3.amazonaws.com\/cta\/default\/26290363\/c8ce86f7-8b19-454e-86bd-b2bcf3b28c75.png\" alt=\"FR - Whitepaper : Migrer vers SharePoint Online\" width=\"1000\" height=\"333\" \/><\/a><\/span><script charset=\"utf-8\" src=\"https:\/\/js-eu1.hscta.net\/cta\/current.js\"><\/script><script type=\"text\/javascript\"> hbspt.cta.load(26290363, 'c8ce86f7-8b19-454e-86bd-b2bcf3b28c75', {\"useNewLoader\":\"true\",\"region\":\"eu1\"}); <\/script><\/span><!-- end HubSpot Call-to-Action Code --><\/p>\n<p>&nbsp;<\/p>\n<h2 style=\"text-align: center;\">On premise ou SaaS : comment faire le bon choix ?<\/h2>\n<p style=\"text-align: justify;\">Pour vous aider \u00e0 choisir, prenons en exemple un logiciel de gestion de documents et de connaissances. Sharepoint, propos\u00e9 par Microsoft, est id\u00e9al pour concevoir un intranet efficace. Depuis quelques ann\u00e9es, la solution on premise Sharepoint existe aussi en mode SaaS : il s\u2019agit de Sharepoint online.<\/p>\n<p style=\"text-align: justify;\"><img fetchpriority=\"low\" loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-81534 aligncenter\" src=\"https:\/\/powell-software.com\/wp-content\/uploads\/2022\/10\/saas-vs-on-premise-sharepoint-480x288.jpg\" alt=\"saas vs on premise sharepoint\" width=\"480\" height=\"288\" srcset=\"https:\/\/powell-software.com\/wp-content\/uploads\/2022\/10\/saas-vs-on-premise-sharepoint-480x288.jpg 480w, https:\/\/powell-software.com\/wp-content\/uploads\/2022\/10\/saas-vs-on-premise-sharepoint-768x461.jpg 768w, https:\/\/powell-software.com\/wp-content\/uploads\/2022\/10\/saas-vs-on-premise-sharepoint.jpg 800w\" sizes=\"auto, (max-width: 480px) 100vw, 480px\" \/><\/p>\n<p style=\"text-align: justify;\">N\u00e9anmoins, la solution SaaS s\u00e9duit de plus en plus d\u2019entreprises. Microsoft a pris en compte cette \u00e9volution. L\u2019entreprise a donc programm\u00e9 l\u2019EOL de Sharepoint 2013 pour 2023. Puis, peu \u00e0 peu, ce sont les versions plus r\u00e9centes du logiciel qui ne seront plus prises en charge . L\u2019alternative propos\u00e9e aux utilisateurs par Microsoft est de migrer vers sa version cloud, Sharepoint online.<\/p>\n<p style=\"text-align: justify;\">Les utilisateurs de la solution on premise n\u2019auront donc plus acc\u00e8s \u00e0 un support technique et aux mises \u00e0 jour. Si le logiciel pourra toujours \u00eatre utilis\u00e9, il deviendra vite obsol\u00e8te. Le b\u00e9n\u00e9fice d\u2019une licence perp\u00e9tuelle a donc des limites. Le cloud demeure un environnement de travail p\u00e9renne, car c\u2019est une solution qui se veut <strong>corrective et \u00e9volutive<\/strong>.<\/p>\n<p style=\"text-align: justify;\">Pour les utilisateurs de l\u2019environnement Microsoft, Sharepoint online est inclus dans l\u2019abonnement Microsoft 365. C\u2019est donc une solution id\u00e9ale et peu co\u00fbteuse. Pour en savoir plus sur le programme SaaS de Microsoft, t\u00e9l\u00e9chargez notre guide pour<a href=\"https:\/\/landing.powell-software.com\/fr\/whitepaper-migrer-vers-sharepoint-online\" target=\"_blank\" rel=\"noopener noreferrer\"> migrer sur Sharepoint online.<\/a><\/p>\n<p style=\"text-align: justify;\"><strong>On premise vs SaaS<\/strong> : pour faire le bon choix, faites-le point sur vos besoins pour votre SI. Les logiciels SaaS tendent \u00e0 \u00eatre de plus en plus pris\u00e9s. Faciles \u00e0 utiliser et peu co\u00fbteux, ils remplacent souvent les programmes on-premise. Leur seul v\u00e9ritable inconv\u00e9nient est l\u2019obligation d\u2019\u00eatre connect\u00e9 au web pour \u00eatre utilis\u00e9. Cependant, dans un monde de plus en plus digitalis\u00e9, cela ne devrait pas \u00eatre un frein \u00e0 leur d\u00e9veloppement.<\/p>\n<p>&nbsp;<\/p>\n<p><!--HubSpot Call-to-Action Code --><span id=\"hs-cta-wrapper-c8ce86f7-8b19-454e-86bd-b2bcf3b28c75\" class=\"hs-cta-wrapper\"><span id=\"hs-cta-c8ce86f7-8b19-454e-86bd-b2bcf3b28c75\" class=\"hs-cta-node hs-cta-c8ce86f7-8b19-454e-86bd-b2bcf3b28c75\"><!-- [if lte IE 8]>\n\n\n<div id=\"hs-cta-ie-element\"><\/div>\n\n\n<![endif]--><a href=\"https:\/\/hubspot-cta-redirect-eu1-prod.s3.amazonaws.com\/cta\/redirect\/26290363\/c8ce86f7-8b19-454e-86bd-b2bcf3b28c75\" target=\"_blank\" rel=\"noopener\"><img fetchpriority=\"low\" loading=\"lazy\" decoding=\"async\" id=\"hs-cta-img-c8ce86f7-8b19-454e-86bd-b2bcf3b28c75\" class=\"hs-cta-img\" style=\"border-width: 0px;\" src=\"https:\/\/hubspot-no-cache-eu1-prod.s3.amazonaws.com\/cta\/default\/26290363\/c8ce86f7-8b19-454e-86bd-b2bcf3b28c75.png\" alt=\"FR - Whitepaper : Migrer vers SharePoint Online\" width=\"1000\" height=\"333\" \/><\/a><\/span><script charset=\"utf-8\" src=\"https:\/\/js-eu1.hscta.net\/cta\/current.js\"><\/script><script type=\"text\/javascript\"> hbspt.cta.load(26290363, 'c8ce86f7-8b19-454e-86bd-b2bcf3b28c75', {\"useNewLoader\":\"true\",\"region\":\"eu1\"}); <\/script><\/span><!-- end HubSpot Call-to-Action Code --><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Qu\u2019est-ce qu\u2019une solution on premise ? Une solution on premise d\u00e9signe un logiciel h\u00e9berg\u00e9 localement par l\u2019entreprise sur ses propres serveurs. Il s\u2019agit d\u2019un mode &hellip; <a href=\"https:\/\/powell-software.com\/fr\/resources\/blog\/on-premise-vs-saas\/\">Continued<\/a><\/p>\n","protected":false},"author":44,"featured_media":81540,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1671],"audiences":[1688],"interests":[1676],"products":[],"zones":[],"class_list":["post-81533","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","audiences-information-technologie","interests-digital-workplace"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>On premise vs SaaS : comment choisir ? - Powell<\/title>\n<meta name=\"description\" content=\"Vous h\u00e9sitez sur le choix d\u2019un logiciel pour votre SI. On-premise vs SaaS : quelle est la meilleure solution ? 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On-premise vs SaaS : quelle est la meilleure solution ? 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