{"id":11496,"date":"2026-03-05T12:29:23","date_gmt":"2026-03-05T04:29:23","guid":{"rendered":"https:\/\/www.cybermedian.com\/fr\/c4-model-case-study-supplementary-diagram-system-landscape-diagram\/"},"modified":"2026-03-05T12:29:23","modified_gmt":"2026-03-05T04:29:23","slug":"c4-model-case-study-supplementary-diagram-system-landscape-diagram","status":"publish","type":"post","link":"https:\/\/www.cybermedian.com\/fr\/c4-model-case-study-supplementary-diagram-system-landscape-diagram\/","title":{"rendered":"\u00c9tude de cas du mod\u00e8le C4 \u2013 Diagramme suppl\u00e9mentaire : Diagramme du paysage du syst\u00e8me"},"content":{"rendered":"<h3>Objectif du diagramme du paysage du syst\u00e8me (niveau 0 C4 \/ Paysage)<\/h3>\n<p>Le\u00a0<strong>Diagramme du paysage du syst\u00e8me<\/strong>\u00a0est la\u00a0<strong>plus large<\/strong>\u00a0vue dans la famille de mod\u00e8les C4.<br \/>\nIl est situ\u00e9\u00a0<strong>au-dessus<\/strong>\u00a0du diagramme de contexte du syst\u00e8me et montre :<\/p>\n<ul>\n<li>\n<p>Tous les principaux\u00a0<strong>syst\u00e8mes logiciels<\/strong>\u00a0qui sont importants du point de vue de l&#8217;organisation \/ unit\u00e9 commerciale \/ ligne de produits \/ \u00e9quipe<\/p>\n<\/li>\n<li>\n<p>Comment ces syst\u00e8mes\u00a0<strong>interagissent \u00e0 un niveau tr\u00e8s \u00e9lev\u00e9<\/strong><\/p>\n<\/li>\n<li>\n<p>Quels syst\u00e8mes sont\u00a0<strong>internes<\/strong>,\u00a0<strong>externes<\/strong>,\u00a0<strong>anciens<\/strong>,\u00a0<strong>strat\u00e9giques<\/strong>,\u00a0<strong>en cours de remplacement<\/strong>,\u00a0<strong>en cours de construction<\/strong>, etc.<\/p>\n<\/li>\n<li>\n<p>Souvent inclut\u00a0<strong>personnes \/ groupes d&#8217;acteurs<\/strong>uniquement lorsqu\u2019ils sont centraux \u00e0 plusieurs syst\u00e8mes<\/p>\n<\/li>\n<\/ul>\n<p>Il r\u00e9pond \u00e0 des questions telles que :<\/p>\n<ul>\n<li>\n<p>\u00ab \u00c0 quoi ressemble notre ensemble num\u00e9rique entier aujourd\u2019hui ? \u00bb<\/p>\n<\/li>\n<li>\n<p>\u00ab Quels syst\u00e8mes communiquent avec notre mainframe bancaire centrale ? \u00bb<\/p>\n<\/li>\n<li>\n<p>\u00ab O\u00f9 se situent les principaux points de douleur d\u2019int\u00e9gration ? \u00bb<\/p>\n<\/li>\n<li>\n<p>\u00ab Quelles sont les nouvelles initiatives qui touchent de nombreux syst\u00e8mes existants ? \u00bb<\/p>\n<\/li>\n<\/ul>\n<p>Il est<strong>pas<\/strong>orient\u00e9 vers un seul syst\u00e8me logiciel \u2014 il s\u2019agit du tableau d\u2019ensemble \u00e0 l\u2019\u00e9chelle de l\u2019organisation \/ du d\u00e9partement.<\/p>\n<h3>Bons titres pour un diagramme de paysage des syst\u00e8mes<\/h3>\n<p>Choisissez un titre qui communique clairement le<strong>p\u00e9rim\u00e8tre<\/strong>et<strong>perspective<\/strong>. Certains exemples forts et couramment utilis\u00e9s :<\/p>\n<ol>\n<li>\n<p>Big Bank plc \u2013 Paysage des syst\u00e8mes d\u2019entreprise \/ banque centrale 2025<\/p>\n<\/li>\n<li>\n<p>Banque personnelle et pour petites entreprises \u2013 Paysage des syst\u00e8mes<\/p>\n<\/li>\n<li>\n<p>Division banque de d\u00e9tail \u2013 Principaux syst\u00e8mes et int\u00e9grations<\/p>\n<\/li>\n<li>\n<p>Programme banque en ligne \u2013 \u00c9cosyst\u00e8me environnant (2025)<\/p>\n<\/li>\n<li>\n<p>Parcours client bout en bout \u2013 Paysage des syst\u00e8mes bancaires<\/p>\n<\/li>\n<li>\n<p>Paysage des syst\u00e8mes strat\u00e9giques \u2013 Big Bank plc (focus sur les canaux client)<\/p>\n<\/li>\n<li>\n<p>Architecture de l\u2019\u00e9tat actuel \u2013 Portefeuille banque de d\u00e9tail et banque num\u00e9rique<\/p>\n<\/li>\n<\/ol>\n<p><strong>Titre recommand\u00e9 pour cette \u00e9tude de cas (large mais cibl\u00e9) :<\/strong><\/p>\n<p><strong>Big Bank plc \u2013 Paysage des syst\u00e8mes banque de d\u00e9tail et banque num\u00e9rique (\u00c9tat cible 2025)<\/strong><\/p>\n<h3>Quand cr\u00e9er \/ mettre \u00e0 jour un diagramme de paysage<\/h3>\n<ul>\n<li>\n<p>Pendant la phase initiale de d\u00e9couverte \/ phase de pr\u00e9paration architecturale<\/p>\n<\/li>\n<li>\n<p>Lors de la rationalisation du portefeuille ou de la planification de la modernisation des syst\u00e8mes h\u00e9rit\u00e9s<\/p>\n<\/li>\n<li>\n<p>Dans le cadre d\u2019un examen architectural trimestriel \/ annuel<\/p>\n<\/li>\n<li>\n<p>Lors de l\u2019int\u00e9gration de dirigeants ou de r\u00e9gulateurs qui ont besoin d\u2019une vue d\u2019ensemble \u00e0 30 000 pieds<\/p>\n<\/li>\n<li>\n<p>Avant le lancement d\u2019un grand programme qui touche de nombreux syst\u00e8mes<\/p>\n<\/li>\n<\/ul>\n<h3>Exemple PlantUML \/ C4-PlantUML \u2013 Diagramme du paysage du syst\u00e8me<img alt=\"\" class=\"alignnone size-full wp-image-16009\" decoding=\"async\" height=\"923\" loading=\"lazy\" sizes=\"auto, (max-width: 783px) 100vw, 783px\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/03\/img_69a9065f63a24.png\" srcset=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/03\/img_69a9065f63a24.png 783w, https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/03\/img_69a9065f63a24-254x300.png 254w, https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/03\/img_69a9065f63a24-768x905.png 768w\" width=\"783\"\/><\/h3>\n<p>@startuml<br \/>\n!include https:\/\/static.visual-paradigm.com\/plantuml-stdlib\/C4-PlantUML\/master\/C4_Context.puml<\/p>\n<p>LAYOUT_HAUT_BAS()<br \/>\nLAYOUT_AVEC_L\u00c9GENDE()<\/p>\n<p>titre Diagramme du paysage du syst\u00e8me pour Big Bank plc<\/p>\n<p>Personne(client, \u00ab Client de banque personnelle \u00bb, \u00ab Un client de la banque, poss\u00e9dant des comptes bancaires personnels. \u00bb)<\/p>\n<p>Limite_entreprise(c0, \u00ab Big Bank plc \u00bb) {<br \/>\nSyst\u00e8me(systeme_bancaire, \u00ab Syst\u00e8me de banque en ligne \u00bb, \u00ab Permet aux clients de consulter les informations sur leurs comptes bancaires et de r\u00e9aliser des paiements. \u00bb)<\/p>\n<p>Syst\u00e8me_ext(atm, \u00ab Guichet automatique \u00bb, \u00ab Permet aux clients de retirer de l&#8217;argent. \u00bb)<br \/>\nSyst\u00e8me_ext(systeme_mail, \u00ab Syst\u00e8me de messagerie \u00e9lectronique \u00bb, \u00ab Le syst\u00e8me interne de messagerie \u00e9lectronique Microsoft Exchange. \u00bb)<\/p>\n<p>Syst\u00e8me_ext(mainframe, \u00ab Syst\u00e8me bancaire principal \u00bb, \u00ab Stocke toutes les informations essentielles sur les clients, les comptes, les transactions, etc. \u00bb)<\/p>\n<p>Personne_ext(service_client, \u00ab Personnel du service client \u00bb, \u00ab Personnel du service client au sein de la banque. \u00bb)<br \/>\nPersonne_ext(back_office, \u00ab Personnel du back-office \u00bb, \u00ab Personnel administratif et de support au sein de la banque. \u00bb)<br \/>\n}<\/p>\n<p>Rel_Neighbor(client, systeme_bancaire, \u00ab Utilise \u00bb)<br \/>\nRel_R(client, atm, \u00ab Retire de l&#8217;argent en utilisant \u00bb)<br \/>\nRel_Arriere(client, systeme_mail, \u00ab Envoie des e-mails \u00e0 \u00bb)<\/p>\n<p>Rel_R(client, service_client, \u00ab Pose des questions \u00e0 \u00bb, \u00ab T\u00e9l\u00e9phone \u00bb)<\/p>\n<p>Rel_D(systeme_bancaire, systeme_mail, \u00ab Envoie un e-mail en utilisant \u00bb)<br \/>\nRel_R(atm, mainframe, \u00ab Utilise \u00bb)<br \/>\nRel_R(systeme_bancaire, mainframe, \u00ab Utilise \u00bb)<br \/>\nRel_D(service_client, mainframe, \u00ab Utilise \u00bb)<br \/>\nRel_Haut(back_office, mainframe, \u00ab Utilise \u00bb)<\/p>\n<p>Lay_D(atm, systeme_bancaire)<\/p>\n<p>Lay_D(atm, client)<br \/>\nLay_Haut(systeme_mail, client)<br \/>\n@enduml<\/p>\n<h3>Guide d&#8217;interpr\u00e9tation rapide<\/h3>\n<ul>\n<li>\n<p><strong>C\u00f4t\u00e9 gauche<\/strong>\u00a0\u2014 principalement\u00a0<strong>nouveau\/nuage\/moderne<\/strong>\u00a0initiatives<\/p>\n<\/li>\n<li>\n<p><strong>Centre \/ droite<\/strong>\u00a0\u2014\u00a0<strong>noyau h\u00e9rit\u00e9<\/strong>\u00a0et\u00a0<strong>centres d&#8217;int\u00e9gration lourds<\/strong><\/p>\n<\/li>\n<li>\n<p><strong>Syst\u00e8mes externes<\/strong>\u00a0marqu\u00e9s par\u00a0<code data-backticks=\"1\">_Ext<\/code><\/p>\n<\/li>\n<li>\n<p><strong>L\u00e9gende<\/strong>\u00a0g\u00e9n\u00e9r\u00e9 automatiquement gr\u00e2ce \u00e0\u00a0<code data-backticks=\"1\">MISE_EN_PAGE_AVEC_L\u00c9GENDE()<\/code><\/p>\n<\/li>\n<li>\n<p>Limites utilis\u00e9es uniquement l\u00e0 o\u00f9 elles sont utiles (ici autour des nouveaux canaux num\u00e9riques)<\/p>\n<\/li>\n<\/ul>\n<p>Ce type de diagramme est intentionnellement\u00a0<strong>\u00e0 grain grossier<\/strong>\u00a0\u2014 cela fait g\u00e9n\u00e9ralement\u00a0<strong>pas<\/strong>\u00a0afficher des conteneurs ou des composants, des bases de donn\u00e9es, des protocoles, etc. Ces d\u00e9tails appartiennent \u00e0\u00a0<strong>Contexte du syst\u00e8me<\/strong>\u00a0et\u00a0<strong>Conteneur<\/strong>\u00a0diagrammes des syst\u00e8mes individuels.<\/p>\n<p>Souhaitez-vous\u00a0:<\/p>\n<ul>\n<li>\n<p>\u00c9tendre cela en un\u00a0<strong>\u00e9tat actuel vs \u00e9tat cible<\/strong>\u00a0comparaison\u00a0?<\/p>\n<\/li>\n<li>\n<p>Ajouter un codage par couleur (h\u00e9rit\u00e9 = orange, strat\u00e9gique = vert, etc.)\u00a0?<\/p>\n<\/li>\n<li>\n<p>Se concentrer sur une port\u00e9e plus r\u00e9duite (par exemple, uniquement le paysage des paiements)\u00a0?<\/p>\n<\/li>\n<li>\n<p>Convertissez cet exemple en Mermaid au lieu de cela ?<\/p>\n<\/li>\n<\/ul>\n<p class=\"\">Faites-moi savoir comment vous souhaitez l&#8217;adapter.<\/p>\n<ul>\n<li><a href=\"https:\/\/www.archimetric.com\/the-ultimate-guide-to-c4-model-visualization-with-visual-paradigms-ai-tools\/\"><strong>Guide ultime de la visualisation du mod\u00e8le C4 \u00e0 l&#8217;aide des outils d&#8217;IA de Visual Paradigm<\/strong><\/a>: Ce guide explique comment tirer parti des outils aliment\u00e9s par l&#8217;IA pour automatiser et am\u00e9liorer la visualisation du mod\u00e8le C4 afin de concevoir plus rapidement des architectures logicielles.<\/li>\n<li><a href=\"https:\/\/www.archimetric.com\/leveraging-visual-paradigms-ai-c4-studio-a-comprehensive-guide-to-streamlined-architectural-documentation\/\"><strong>Utilisation de l&#8217;AI C4 Studio de Visual Paradigm pour une documentation d&#8217;architecture simplifi\u00e9e<\/strong><\/a>: Cet article d\u00e9taille l&#8217;utilisation d&#8217;un studio am\u00e9lior\u00e9 par l&#8217;IA pour cr\u00e9er une documentation d&#8217;architecture logicielle propre, \u00e9volutif et maintenable.<\/li>\n<li><a href=\"https:\/\/blog.visual-paradigm.com\/the-ultimate-guide-to-c4-plantuml-studio-revolutionizing-software-architecture-design\/\"><strong>Le guide ultime de C4-PlantUML Studio : r\u00e9volutionnant la conception d&#8217;architecture logicielle<\/strong><\/a>: Cette ressource explore la combinaison de l&#8217;automatisation pilot\u00e9e par l&#8217;IA, de la clart\u00e9 du mod\u00e8le C4 et de la flexibilit\u00e9 de PlantUML en un outil puissant unique.<\/li>\n<li><a href=\"https:\/\/www.cybermedian.com\/%F0%9F%A7%A0-a-comprehensive-guide-to-visual-paradigms-ai-powered-c4-plantuml-studio\/\"><strong>Un guide complet sur le studio C4 PlantUML aliment\u00e9 par l&#8217;IA de Visual Paradigm<\/strong><\/a>: Ce guide d\u00e9crit un outil sp\u00e9cialement con\u00e7u, publi\u00e9 \u00e0 la fin de 2025, qui transforme les invites en langage naturel en diagrammes C4 multicouches.<\/li>\n<li><a href=\"https:\/\/www.visual-paradigm.com\/features\/c4-plantuml-studio\/\"><strong>Studio C4-PlantUML | G\u00e9n\u00e9rateur de diagrammes C4 aliment\u00e9 par l&#8217;IA<\/strong><\/a>: Cette vue d&#8217;ensemble des fonctionnalit\u00e9s met en \u00e9vidence un outil pilot\u00e9 par l&#8217;IA con\u00e7u pour g\u00e9n\u00e9rer des diagrammes d&#8217;architecture logicielle C4 \u00e0 partir de descriptions textuelles simples.<\/li>\n<li><a href=\"https:\/\/www.archimetric.com\/comprehensive-tutorial-generating-and-modifying-c4-component-diagrams-with-visual-paradigm-ai-chatbot\/\"><strong>G\u00e9n\u00e9ration et modification de diagrammes de composants C4 avec le chatbot d&#8217;IA de Visual Paradigm<\/strong><\/a>: Ce tutoriel montre comment utiliser un chatbot aliment\u00e9 par l&#8217;IA pour cr\u00e9er et affiner it\u00e9rativement l&#8217;architecture au niveau des composants pour des syst\u00e8mes complexes.<\/li>\n<li><a href=\"https:\/\/ai.visual-paradigm.com\/tool\/ai-powered-c4-plantuml-studio\/about-the-diagrams\/\"><strong>G\u00e9n\u00e9rateur de diagrammes C4 aliment\u00e9 par l&#8217;IA : niveaux fondamentaux et vues d&#8217;accompagnement<\/strong><\/a>: Cette page explique comment le g\u00e9n\u00e9rateur d&#8217;IA prend en charge les quatre niveaux fondamentaux du mod\u00e8le C4 \u2014 Contexte, Conteneur, Composant et D\u00e9ploiement \u2014 afin de fournir une documentation compl\u00e8te.<\/li>\n<li><a href=\"https:\/\/updates.visual-paradigm.com\/releases\/ai-diagram-generator-complete-c4-model\/\"><strong>G\u00e9n\u00e9rateur de diagrammes d&#8217;IA : version avec prise en charge compl\u00e8te du mod\u00e8le C4<\/strong><\/a>: Cette mise \u00e0 jour d\u00e9taille l&#8217;int\u00e9gration de fonctionnalit\u00e9s aliment\u00e9es par l&#8217;IA pour la cr\u00e9ation automatis\u00e9e de diagrammes hi\u00e9rarchiques du mod\u00e8le C4.<\/li>\n<li><a href=\"https:\/\/www.ez-knowledge.com\/beyond-the-code-how-ai-automates-c4-model-diagrams-for-devops-and-cloud-teams\/\"><strong>G\u00e9n\u00e9rateur d&#8217;IA du mod\u00e8le C4 : automatisation du cycle de vie complet de mod\u00e9lisation<\/strong><\/a>: Cette ressource met en \u00e9vidence comment un chatbot d&#8217;IA sp\u00e9cialis\u00e9 utilise des invites conversationnelles pour assurer la coh\u00e9rence dans la documentation d&#8217;architecture pour les \u00e9quipes DevOps.<\/li>\n<li><a href=\"https:\/\/www.archimetric.com\/comprehensive-review-generic-ai-chatbots-vs-visual-paradigms-c4-tools\/\"><strong>Revue compl\u00e8te : chatbots d&#8217;IA g\u00e9n\u00e9riques vs. outils C4 de Visual Paradigm<\/strong><\/a>: Cette comparaison explique pourquoi des outils sp\u00e9cialis\u00e9s comme le studio C4 PlantUML fournissent des r\u00e9sultats plus structur\u00e9s et de qualit\u00e9 professionnelle que les mod\u00e8les linguistiques g\u00e9n\u00e9raux.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Objectif du diagramme du paysage du syst\u00e8me (niveau 0 C4 \/ Paysage) Le\u00a0Diagramme du paysage du syst\u00e8me\u00a0est la\u00a0plus large\u00a0vue dans<\/p>\n","protected":false},"author":11,"featured_media":11497,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"","footnotes":""},"categories":[109],"tags":[],"class_list":["post-11496","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-c4-model"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u00c9tude de cas du mod\u00e8le C4 \u2013 Diagramme suppl\u00e9mentaire : Diagramme du paysage du syst\u00e8me - Cyberm\u00e9diane<\/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.cybermedian.com\/fr\/c4-model-case-study-supplementary-diagram-system-landscape-diagram\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta 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