Observability

Observability is the degree to which a system can be monitored. A system that is highly observable can be easily monitored for errors and performance issues. A system that is not observable is more difficult to monitor, and may have hidden errors or performance problems.

In the context of computer systems, observability refers to the ability to detect and diagnose errors and performance issues. observability is achieved by instrumenting the system with logging, monitoring, and tracing tools.