Auto Scaling provides you with an option to enable Auto Scaling for one or more EC2 instances by attaching them to your existing Auto Scaling group. After the instances are attached, they become a part of the Auto Scaling group.
If you are aiming to use Auto Scaling, then certain important points must be acknowledged. This particular section helps you to gain the basic information regarding it. All these can be clearly explained in AWS Training.
Auto Scaling helps you maintain application availability. Auto Scaling launches and terminates Amazon EC2 instances automatically according to user-defined policies, schedules, and alarms. You can use Auto Scaling to maintain a fleet of Amazon EC2 instances that can adjust to any presented load. You can also use Auto Scaling to bring up multiple instances in a group at one time.