C4 Component Diagram
The C4 Component Diagram dives deeper into a single container to show the internal components and how they collaborate.
Instant Component-Level Architecture Generation
With the AI chatbot, you can outline the internal structure of any container in seconds. Simply describe how your service or application is organized — the functional areas, the core responsibilities, and the external dependencies — and the chatbot will convert your explanation into a complete C4 Component Diagram. It highlights the key components, their roles, and how they communicate, giving you an immediate architectural map before any code is written.
Refine Internal Design Through Step-by-Step Conversation
As your design evolves, updating your diagram becomes effortless. You can ask the chatbot to add a new component, restructure responsibilities, or adjust dependencies, and the diagram will be regenerated instantly. This conversational workflow supports iterative thinking, helping you explore options, validate design decisions, and ensure that the container’s internal architecture remains clear and well organized.
Benefits of Creating C4 Component Diagrams with the AI Chatbot
Builds detailed, Level 3 diagrams directly from natural-language descriptions.
Automatically applies consistent C4 notation for clear communication.
Enables fast architectural iteration as you refine internal structure.
Helps teams discuss and compare design alternatives visually.
Keeps documentation synchronized with evolving source code.
Provides developers with a clear structural reference before implementation.
Supports refactoring by modeling current and future component layouts.
Examples of Generating C4 Component Diagram
Use simple text prompts to generate this diagram in seconds. Here are a few examples to get you started:
Logistics and Delivery Tracking System
“Show a C4 Component Diagram for a Logistics and Delivery Tracking System. “
Online Exam and Assessment System
“Prepare a C4 Component Diagram for an Online Exam and Assessment System.”
E-Commerce Platform
“Generate a C4 Component Diagram for an E-Commerce Platform.”
What Is a C4 Component Diagram?
A C4 Component Diagram provides a deeper look into the internal structure of a single container, such as a web API, mobile app, or microservice. It illustrates the major components inside that container, how responsibilities are divided, and how each part interacts with others and with external systems.
Unlike class-level views, this diagram emphasizes conceptual groupings of functionality rather than individual classes. It gives developers a high-level yet practical understanding of how the codebase is organized, making it easier to plan work, perform reviews, and maintain architectural consistency.
Key Concepts
C4 Component Diagram
A C4 Component Diagram shows the components inside a container and how they interact. It helps visualize the internal structure of applications and the responsibilities of each component within a system.
Systems / External Systems
System – An internal system that participates in interactions.
SystemDb – A database system storing persistent data.
SystemQueue – A messaging or queuing system for asynchronous communication.
System_Ext – An external system interacting with your system.
SystemDb_Ext – An external database system.
SystemQueue_Ext – An external queue or messaging system.
Boundaries
Boundary – General boundary to group elements.
Enterprise_Boundary – Defines the organization or enterprise scope.
System_Boundary – Defines the boundary of a system, separating internal components from external systems.
Container_Boundary – Defines the boundary of a container, grouping its internal components.
People / External Actors
Person – A human user interacting with the system.
Person_Ext – An external user or role outside the system boundary.
Components / External Components
Component – A modular part of a container providing specific functionality.
ComponentDb – A component focused on data persistence.
ComponentQueue – A component managing messaging or asynchronous tasks.
Component_Ext – An external component interacting with your system.
ComponentDb_Ext – An external database component.
ComponentQueue_Ext – An external messaging component.
Containers / External Containers
Container – A deployable application, service, or microservice that hosts components.
ContainerDb – A database container storing persistent data.
ContainerQueue – A messaging or queuing container.
Container_Ext – An external container interacting with your system.
ContainerDb_Ext – An external database container.
ContainerQueue_Ext – An external messaging container.
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