C4

Let’s talk today about C4 in action, the framework that allows you to diagram architectures.

We use it to diagram system  with a hierarchy of four levels of description:

• C1: Context
• C2: Containers
• C3: Components
• C4: Code

To clarify, C4 diagrams are not commonly created in most cases.. too heavy and useless.

Here, we want to focus on the tooling. We use drawio  with C4 shapes and layers

If we want to see only C1:

Then C1 and C2:

We just select the layers we want to see.

It is a very convenient way to produce this kind of diagrams.

Reference:

https://c4model.com/