The answer
A small project benefits from a short document describing its main components, permissions, and data flow. The document can remain brief while exposing costly misunderstandings early.
What is system architecture?
Does a small wedding-planning project need an architecture document?
More FAQs in What is system architecture?
Arrows should identify meaningful interactions, such as an authenticated request or a database query. Labeling the data and direction makes the diagram useful during implementation.
Revisit a decision when its original assumptions change, such as higher traffic, a new integration, or operational difficulties. Record the evidence and impact before changing direction.
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