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Software architecture overview

Give someone a useful first map of your system.

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A small web application overview showing a browser, app service, database and external email provider, with labeled connections.
Use this starter to introduce a small application or explain a proposed change during a technical discussion.

Make it fit your system.

  1. Replace each sample component with its role in your application.
  2. Label each connection with its purpose or protocol.
  3. Highlight one proposed change; keep unrelated infrastructure out of this view.

Click Use this template to open the drawing. Choose Text to change a label, or Select to move a mark. If a drawing is already open, you can keep it or open the template with a recoverable copy.

Watch the explanation unfold.

A captioned walkthrough, without narration. Open Video on the canvas to change the replay pacing or record your own explanation.
Read the explanation

This example shows a browser calling an application service over HTTPS. The service reads and writes a data store and calls an external email provider. It is a simple application overview, not a deployment map or a complete C4 model. A software container in C4 means an application or data store, not necessarily a Docker container. Choose one level of detail and name what each connection does.

Reference: C4 model: Container diagram.

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