What is an Auto Scaling group?

Monitors your applications and automatically send you alerts and notifications in case a parameter threshold is breached on any of the resource added to the group.

An AWS service that helps you maintain application availability and enables you to automatically add or remove EC$2$ instances according to conditions you define

Collection of EC$2$ instances that are treated as a logical grouping for the purposes of automatic scaling and management

Monitors your applications and automatically adjusts capacity