Datadog

Datadog is the leading cloud monitoring and observability platform providing infrastructure metrics, application performance monitoring (APM), log management, synthetic monitoring, real user monitoring (RUM), and cloud security in a single unified platform. Founded in 2010, Datadog serves over 29,000 customers including Peloton, Cisco, Samsung, and 84% of Fortune 500 companies with AWS/Azure/GCP infrastructure monitoring needs. Datadog's core strength is the correlation between metrics, traces, and logs — commonly called the "three pillars of observability." A Datadog APM trace for a slow API endpoint links directly to the infrastructure metrics of the host it ran on and the specific log lines generated during that request, enabling root cause analysis without switching between tools. Datadog's 800+ integration library auto-configures monitoring for AWS services, Kubernetes, Docker, databases, and 700+ other technologies. Datadog's pricing model charges per host (servers/containers) for infrastructure monitoring and per ingested/indexed GB for logs — which provides predictable capacity-based billing for infrastructure-heavy teams. Datadog Security Platform extends observability to cloud security posture management (CSPM), workload security (CWS), and application security management (ASM).