Advanced – Non-Functional Testing
Service Level Agreement (SLA) – ISTQB Definition
Last Updated: July 12, 2026 · SoftwareTestPilot QA Team
Official ISTQB Definition
A formal agreement between a service provider and a customer that defines the level of service expected.
In simple words
Contract that promises the customer a specific level of service.
Exam tip
SLA breaches usually trigger financial penalties.
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