Introduction

LikeC4 is a DSL for describing software architecture.

Source files must have .likec4 or .c4 extensions.
All sources merged into a single model (explained later in Workspace).

A project may look like this:

• Directorybackend

  • Directoryservice1

    • model.c4
    • views.c4
  • Directoryservice2

    • model.c4
  • …
• Directoryexternals

  • amazon.c4
  • …
• landscape.c4
• specs.c4

Top-level statements

Source file should have at least one of these statements:

• specification - defines element kinds to be used in the model, like app, microservice, graphqlMutation…
• model - architecture elements, hierarchies, compositions and relationships
• views - visualizations

example.c4

specification {
  //...
}

model {
  //...
}

views {
  //...
}

It is not allowed to have multiple statements of the same kind:

invalid.c4

model {
}

// ⛔️ not allowed to have multiple statements
model {}

But it is allowed to skip any of them, so only model, or only views, or only specification, or any combination of them.