What is AWS CloudWatch?

Amazon CloudWatch is a monitoring and observability service that provides data and actionable insights for AWS resources, applications, and services. CloudWatch collects monitoring and operational data in the form of logs, metrics, and events. It provides unified view of AWS resources and applications, enables alarms and automated actions, creates dashboards, and analyzes logs. CloudWatch supports custom metrics, distributed tracing with X-Ray integration, and anomaly detection using machine learning. It helps you monitor application performance, optimize resource utilization, and respond to system-wide performance changes.