Explain the difference between OpenTelemetry and OpenTracing/OpenCensus.

beginner

Re-explain

OpenTelemetry is the successor and merger of two previous projects:

OpenTracing: Focused primarily on distributed tracing with vendor-neutral APIs
OpenCensus: Provided both tracing and metrics collection capabilities

Key differences:

OpenTelemetry combines both projects' capabilities into a single, comprehensive framework
Provides unified APIs for traces, metrics, and logs (the three pillars)
Better standardization and broader vendor support
More mature ecosystem with extensive instrumentation libraries
Backward compatibility with both OpenTracing and OpenCensus

OpenTracing and OpenCensus are now in maintenance mode, with new development focused on OpenTelemetry.

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