Software Architecture with the C4 Model and Diagram-as-Code

Documenting software architecture often leads to outdated, messy visual drawings that are difficult to maintain. The C4 model solves this by providing a clear, hierarchical framework to describe systems, containers, components, and code. This text-based course guides you from the fundamental principles of software architecture visualization to writing clean, version-controlled architecture definitions using modern diagram-as-code tools. You will learn how to structure your system documentation so that it naturally evolves alongside your codebase. What you'll learn: - Understand the four levels of the C4 model: Context, Containers, Components, and Code - Write declarative architecture definitions using popular tools like Mermaid and PlantUML - Organize complex system relationships into clear, readable hierarchical structures - Integrate architecture documentation into Git repositories for seamless version control - Apply best practices for keeping system designs accurate, maintainable, and developer-friendly You will start with core architectural concepts and terminology before diving into the syntax of diagram-as-code. Through structured written explanations and code snippets, you will explore how to model real-world scenarios and integrate your documentation into modern development workflows. This course is designed for software developers, system architects, and technical leaders who want to improve their documentation workflow. No prior experience with the C4 model or diagram-as-code tools is required. Start writing clean, maintainable architecture documentation today.