Couchbase has adopted OpenTracing as its tracing API for system observability in distributed systems, providing flexibility and vendor agnosticism. The integration is crucial for Couchbase SDKs, which utilize OpenTracing to create "Spans" that track the journey of requests including steps like request encoding, dispatch, and response decoding. The SDKs come with an out-of-the-box Tracer, the ThresholdLoggingTracer, which logs operations exceeding a set threshold, helping diagnose performance issues. Couchbase's observability enhancements include server-reported operation durations in responses, aiding in identifying slow operations. OpenTracing, now an incubating project under the Cloud Native Computing Foundation, is expected to evolve, with Couchbase's interface tracking its progress. Future discussions will delve into integrating with other tracing solutions like Jaeger and enhancing response time observability with the Couchbase Java SDK.