Amazon CloudWatch is a monitoring and observability service built for DevOps engineers, developers, site reliability engineers (SREs), and IT managers. Coursera's Amazon CloudWatch catalogue teaches you how to monitor your applications, collect and track metrics, collect and monitor log files, set alarms, and automatically react to changes in your AWS resources. You'll learn about using CloudWatch to gain system-wide visibility into resource utilization, application performance, and operational health, and leverage these insights to react and keep your application running smoothly. This skill can be utilized to optimize application and resource efficiency, improve system reliability, and enhance your application monitoring practices in AWS environments.