SigNoz is an observability platform built on OpenTelemetry, marketed as an open-source alternative to Datadog. It brings traces, metrics and logs together in one application, with APM, exceptions, alerts, dashboards and LLM observability. For metrics it supports PromQL and monitoring of Kubernetes and hosts; logs are searched in a columnar database with built-in correlation to traces. It is available as a managed service (SigNoz Cloud) and as a self-hosted version that you run on your own infrastructure using Docker, Kubernetes or Linux.
For SigNoz Cloud, you can create a workspace in the US, EU or India region. Organisations that want to keep data entirely under their own control can self-host the open-source edition; the enterprise self-hosted tier adds data residency controls, among other features. The SigNoz website does not state where the company is headquartered. For a European organisation, the EU region and self-hosting are therefore two ways to keep telemetry data inside Europe.