OpenTelemetry is an open-source, vendor-neutral observability framework for cloud-native software. It provides APIs and SDKs for instrumenting code, agents for automatic instrumentation, and the OpenTelemetry Collector, which can run as an agent or gateway to process and route telemetry. The project covers traces, metrics, logs and baggage and uses the OTLP wire protocol, so data can be exported to any compatible backend without changing application code. It emerged from the merger of OpenTracing and OpenCensus.
OpenTelemetry is a project of the Cloud Native Computing Foundation (CNCF), part of the Linux Foundation, a US non-profit (501(c)(6)). The code is licensed under Apache 2.0. There is no vendor cloud: you run the libraries and the Collector on your own infrastructure and decide yourself which backend receives the telemetry, and therefore where it is stored. For European organisations this makes OpenTelemetry a neutral instrumentation layer; the sovereignty question moves to the chosen backend and its hosting location. Telemetry can contain personal data, so what you export and where it goes deserves attention.