What is AWS CloudWatch?

AWS CloudWatch is a monitoring and observability service that provides data and actionable insights for AWS resources and applications. It collects monitoring and operational data in the form of logs, metrics, and events. CloudWatch enables you to set alarms, visualize logs and metrics, take automated actions, troubleshoot issues, and discover insights. It supports custom metrics and can monitor resources like EC2 instances, DynamoDB tables, RDS instances, and custom application metrics. CloudWatch Logs Insights allows you to interactively search and analyze log data. It integrates with over 70 AWS services and can trigger Lambda functions or SNS notifications based on alarms.