01
Define the system of interest
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GitHub Actions Academy · Architecture Diagrams
System Context Diagram
Show users, external systems and the platform boundary.
Objective: Communicate scope and dependencies clearly to technical and non-technical stakeholders.
Practical guidance
Model
02
Identify human and system actors
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03
Show trusted external dependencies
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04
Label data or interaction direction
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Practical guidance
Validate
01
Remove implementation-level noise
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02
Confirm ownership and trust boundaries
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03
Review with security and operations
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04
Version the diagram with the design decision
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