Advanced – Cloud & Data Testing
CQRS – ISTQB Definition
Last Updated: July 12, 2026 · SoftwareTestPilot QA Team
Official ISTQB Definition
Command Query Responsibility Segregation — separating write (command) and read (query) models for scalability and clarity.
In simple words
Splitting the write side and read side of your data model into separate services.
Exam tip
CQRS pairs naturally with event sourcing; both add complexity — use only when scale justifies it.
Related terms
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