How do AWS Autoscaling Groups work?

How do Auto Scaling Groups work?

AWS Auto Scaling is a service that automatically adjusts the number of compute resources in your application to maintain performance and control costs.

The AWS auto scaling service monitors metrics such as CPU utilization, memory, or custom CloudWatch alarms and then adds or removes EC2 instances, containers, or other resources based on predefined scaling policies.

When demand increases, Auto Scaling launches new instances to handle the load, and when demand decreases, it terminates unneeded instances to save money. This ensures applications remain responsive and available without requiring constant manual intervention, while also optimizing resource usage across varying workloads.

Cameron McKenzie is an AWS Certified AI Practitioner, Machine Learning Engineer, Solutions Architect and author of many popular books in the software development and Cloud Computing space. His growing YouTube channel training devs in Java, Spring, AI and ML has well over 30,000 subscribers.