ISO/IEC/IEEE 42010
Requirements for architecture descriptions: helps establish the viewpoints and information needed for a useful description.
TOGAF
A standard and approach for enterprise architecture, including the ADM method. It supports work from a business need through change planning and governance.
ArchiMate
A language for modelling enterprise architecture. It helps show relationships between business, application and technology layers.
C4 + ADR
Views of a solution and records of decisions. They complement broader approaches when you need to explain a particular system and its trade-offs.
Choose the elements that help a stakeholder make a decision. A diagram without a question to answer quickly becomes decoration.
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