APM tools came into existence to ensure the high performance of enterprise apps. They provided the details regarding performance bottlenecks. However, when cloud-native apps came into play, APM tools lacked full-stack visibility, leading to the birth of observability.
Like APM, observability is a method used to determine the overall health of complex systems and IT workloads. While APM collects data for KPIs, observability aggregates data from various sources to paint a picture of the system's overall health.
Observability has become an essential tool for monitoring microservices and containers where it's not possible to monitor individual components or container instances. This new approach provides information about distributed applications and services that were previously inaccessible by traditional monitoring solutions. Observability is capable of monitoring an application's health by collecting metrics from different sources like logs, server metrics, etc., in real time.
Know the Evolution of IT monitoring from APM to enterprise observability.