Datadog

Datadog is a cloud monitoring and observability platform unifying infrastructure metrics, application performance monitoring (APM), log management, real-user monitoring (RUM), and security monitoring in one place. It ingests data from hundreds of integrations (cloud providers, databases, container orchestrators, CI/CD tools) and correlates metrics, traces, and logs so engineers can move from a dashboard alert to the specific request or line of code causing it. Widely used at scale for production observability across microservices and cloud-native architectures.