What is Auto Scaling in AWS?

AWS Auto Scaling monitors applications and automatically adjusts capacity to maintain steady, predictable performance at the lowest possible cost. It enables you to scale multiple resources across multiple services with a single unified interface. Auto Scaling provides automatic discovery of scalable AWS resources, built-in scaling strategies, predictive scaling capabilities, and smart scaling policies. It helps ensure application availability during demand spikes and optimizes costs during periods of low demand by automatically adding or removing EC2 instances, ECS tasks, DynamoDB tables, and other resources.