What is an SLO (Service-Level Objective)?

Difficulty: unrated

Source: bregman-arie/devops-exercises by Arie Bregman

Answer

An SLO is a target value or range of values for a service level that is measured by an SLI

Example: 99% across 30 days for a specific collection of SLIs.

It's also worthy to note that the SLO also serves as a lower bound, indicating that there is no requirement to be more reliable than necessary because doing so can delay the rollout of new features.