Source: https://uptimeify.io/resources/platform-and-support/glossary/slo

# SLO (Service Level Objective)

> A Service Level Objective (SLO) is an internal target for a reliability metric, for example "99.95% of requests succeed", that a team commits to.

An SLO sits between the customer-facing [SLA](/resources/platform-and-support/glossary/sla) and the raw measurement ([SLI](/resources/platform-and-support/glossary/sli)). It is usually set tighter than the SLA so the team has a safety margin before contractual penalties apply.

SLOs make trade-offs explicit: the gap between your SLO and 100% is your [error budget](/resources/platform-and-support/glossary/error-budget), which teams spend on shipping changes versus protecting stability.