C4 modelComponent diagramArchitecture

C4 Component Diagram (API Application)

C4 level 3 — the components inside the API container: controllers, a security component, a mainframe facade and an e-mail component.

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This C4 component diagram drills inside the API Application container of an internet banking system: the sign-in and accounts controllers, a security component, a mainframe facade and an e-mail component, plus the database and external systems they talk to. It is C4 level 3 — the detail behind a single container.

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“C4 component diagram for the API Application of an internet banking system: a single-page app and mobile app calling a sign-in controller and accounts controller, a security component, a mainframe facade and an e-mail component, with a database and external mainframe and e-mail systems.”

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