Datadog

Datadog shows engineering teams how their systems behave in production. It collects metrics, traces and logs from servers, containers, applications and cloud services, and alerts when something goes wrong. Infrastructure monitoring, application performance monitoring and log management share the same data, so a slow request can be traced down to the server and the log line behind it. It also monitors real user sessions, runs synthetic tests and detects security threats. It is used by engineering, operations and security teams running applications in the cloud.