Amazon CloudWatch Resource Health is a new feature that enables you to automatically discover, manage, and visualize the health and performance of Amazon Elastic Compute Cloud (Amazon EC2) hosts across your applications in a single view. With Resource Health, you can visualize the health of your Amazon EC2 hosts in a map (or list) view by performance dimension such as CPU or Memory, and slice and dice hundreds of hosts using tags and available filters such as instance type, instance state, and status check. This helps in reducing your Mean time to resolution (MTTR) by easily isolating EC2 hosts that are performing sub-optimally.