Amazon CloudWatch is an AWS monitoring and observability service used to monitor AWS resources, applications, and infrastructure. It collects metrics, logs, and events in real time.
With Amazon CloudWatch, you can monitor EC2, RDS, Lambda, EBS, and other AWS services. It also creates alarms and sends notifications through Amazon SNS when issues are detected.
In simple words, Amazon CloudWatch helps you monitor AWS resources, track performance, and receive alerts when something goes wrong.