OpenTelemetry
The CNCF observability project provides cross-language APIs, SDKs, automatic instrumentation, a Collector, and vendor-neutral telemetry protocols.
Why it’s here
Online games can trace login, matchmaking, saves, and economy services end to end without committing early to one monitoring vendor.
Best fit
Analytics, feedback, support, and updates keep a released game healthy over time.
Before you commit
It supplies telemetry plumbing rather than an analysis UI, so instrumentation, sampling, storage, and alerts need other systems; never put raw player PII into spans.