What is the C4 Model Complete Guide to Architecture Diagrams (2026)
Created by software architect Simon Brown in the early 2010s, it provides a structured way to describe the static structure of a software system at four different levels of detail. The name "C4" stands for the four core diagram types: Context, Container, Component, and Code.
C4 Model Explained
Instead of relying on one giant diagram, the C4 approach breaks architecture into four interconnected levels that reveal the right amount of information at the right time. This article focuses on the relationship between the four C4 levels —Context, Containers, Components, and Code—and how they work as a structured ecosystem.
We have learned about the four levels of the C4 model, from the system context diagram to the code diagram, and how each level provides increasing detail and granularity.
The Complete Guide to the C4 Model for Software Architecture
The C4 Model was developed by software architect Simon Brown to bridge the gap between high- level architecture discussions and implementation details. The name "C4" refers to the four hierarchical levels of abstraction:
This guide explores the four levels of the C4 Model. We will examine when to use each level , who the intended audience is, and how to maintain clarity across your technical documentation.
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