A payment notification service on our EKS cluster failed silently for 47 minutes — PagerDuty never fired, Loki never alerted, we found out from a customer tweet. The root cause was a microservice extraction that lost the structured logging config. The fix wasn't more tooling.
Source: [HackerNoon](https://hackernoon.com/your-ci-pipeline-should-reject-any-service-without-an-observability-contract?source=rss)