Overview This article summarizes the key features of AWS Auto Scaling Groups (ASGs ). ASGs manage EC2 instances as a group and are an AWS resource for managing EC2 instances, such as auto scaling or automatically replacing unhealthy nodes. This content is translated by Notion AI. Original content is written by a Korean. In this article, we'll cover the following topics When do I use ASG? What is the difference between Launch Template and Launch Configuration, and which one is recommended to use? What do Desired capacity, Min capacity, and Max capacity in ASG mean, and what do they do? What is the difference between the 3 policies in Dynamic Scaling (Target tracking, Step scaling, Simple scaling)? How do each of the four instance management policies (Launch before terminating, Terminate and launch, No policy, Custom behavior) work? What is ASG rebalancing, and what should I be aware of? What are the features of Target Tracking Scaling, and what are the differen...