Container#

A Container represents an application or a data store. It is something that needs to be running in order for the overall software system to work.

Note: In C4, “Container” does not mean a Docker container. It means a deployable unit like:

• Server-side web application (e.g., Java Spring, ASP.NET Core)
• Client-side web application (e.g., React, Angular)
• Mobile app
• Database schema
• File system

Syntax#

container ID "Label/Name" {
    technology "Technology Stack"
    tags ["tag1", "tag2"]
    // ... contains components
}

Example#

container WebApp "Web Application" {
    technology "Java and Spring MVC"
    tags ["web", "frontend"]
}