Module 5 — Component Diagrams

Theory 20 minutes + Workshop 60 minutes

Duration: 80 minutes. Artefact produced: system component diagram.

What you will learn

Define boundaries

Show what is inside the solution, what is outside it, and where responsibility changes.

Represent components

Use components to describe logical solution parts without implementation noise.

Show interfaces

Make dependencies, integration points, and contracts visible.

Support decisions

Use the diagram to explain impact, ownership, risk, and delivery scope.

A component diagram is a boundary decision

A component diagram shows the important parts of a solution, the interfaces between them, and the responsibilities each part carries. Its job is to make structure and dependency visible enough for architecture, delivery, security, and operations to make better decisions.

Draw a component view

Create a component view for a migration scenario that includes core systems, identity, integration, reporting, data platform, monitoring, and platform services.

Workshop task

Create a component diagram showing major logical components, external systems, and integration contracts.

Assessment prompt

Explain how your component diagram helps delivery teams understand scope, ownership, and integration risk.

What to submit

Component diagram; component responsibility notes; interface list; three architecture risks.

Next module

Module 6 — Sequence Diagrams.