Application Insights, a feature of Azure Monitor, is an Application Performance Management (APM) service for developers and DevOps professionals. Use it to monitor your active applications.
Elasticsearch is a powerful tool for performing searches and data analysis, it was built to work with large volumes of data, allowing you to index documents and perform searches on these documents very close to real time.
Jaeger is an open-source software that uses the OpenTracing protocol to monitor and facilitate distributed tracing in Microservices environments.
OpenTelemetry is a set of APIs, SDKs, tools, and integrations designed and blending OpenTracing and OpenCensus for creating and managing telemetry, tracking, metrics, and logs data.