IT teams have been observing applications for their health and performance since the beginning. They observe the telemetry data (logs, metrics, traces) emitted from the application/microservice using various observability tools and make informed decisions regarding scaling, maintaining, or troubleshooting applications in the production environment.
If observability is not something new and there are a plethora of monitoring and observability tools available in the market, why bother about OpenTelemetry? What makes it special such that it is getting widely adopted? And most importantly, what is in it for developers, DevOps, and SRE folks?