Advanced – Cloud & Data Testing
Event Sourcing – ISTQB Definition
Last Updated: July 12, 2026 · SoftwareTestPilot QA Team
Official ISTQB Definition
A persistence pattern that stores every change as an immutable event, deriving state by replaying events.
In simple words
Storing every change as an event instead of overwriting rows.
Exam tip
Event sourcing gives auditability and time-travel but complicates schema evolution.
Related terms
Practice this term in the ISTQB Mock Test
40 CTFL v4.0 questions, 60-minute timer, instant scoring and chapter-wise breakdown.
Practice in Mock Test