How Datadog Defines Service Criticality at Scale
Datadog, Tuesday, October 13th, 2026
Datadog explains how it classifies thousands of internal services by criticality to focus deployment and reliability work.
Datadog runs thousands of internal services and long treated them uniformly for deployment and reliability decisions.
As its data center footprint grew, sequential rollouts lengthened and a single strict SLO target led to over-investing in some services and under-protecting others, so the company needed to identify which services are truly critical.
The post describes how Datadog defines service criticality at scale to concentrate reliability work where failures would hurt customers most.