Chapter 6 – Test Tools
Chaos Monkey – ISTQB Definition
Last Updated: July 12, 2026 · SoftwareTestPilot QA Team
Official ISTQB Definition
A tool developed by Netflix that randomly terminates instances in production to ensure that engineers implement their services to be resilient to instance failures.
In simple words
A bot that kills random servers in production so the system is forced to survive failure.
Exam tip
Chaos Monkey seeded the chaos engineering discipline.
Related terms
- Chaos EngineeringIntentionally break parts of a live system to check it handles failure gracefully.
- Resilience TestingCheck the system bounces back after crashes or lost dependencies.
- Shift-Right TestingKeep testing after release — observe real users, run experiments, catch issues in production safely.
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