Glossary term
What is SLA (Service Level Agreement)?
SLA stands for Service Level Agreement.
In System Design
A promise to customers with penalties. Example: "Below 99.9% monthly uptime, you get a 10% credit.".
Learn it properly · System DesignLesson 47: SLI, SLO, SLA & Error BudgetsProduct wants to ship daily; operations wants fewer changes; nobody agrees what “reliable enough” means. SLIs, SLOs and SLAs turn it into one number, and error budgets turn that number into a simple rule for when to move fast and when to slow down.In Observability & SRE
A promise to a customer, usually in a contract with a penalty, and looser than your internal SLO.
Learn it properly · Observability & SRELesson 4: SLIs, SLOs and Error BudgetsChoosing indicators, setting objectives, how nines translate to minutes, burn rates and what error budgets are for.