Guide on Amazon ECS Service Auto Scaling

What it is: The ECS (Elastic Container Service) Service Auto Scaling in AWS (Amazon Web Services) is a feature that automatically adjusts the desired count of tasks in your service in response to Cloudwatch alarms. br/>
Why it is important: Auto Scaling is crucial because it allows applications to scale out (add more instances) to handle increased load and to scale in (remove instances) to minimize costs during times of lower demand. This ensures that you have the appropriate number of Amazon EC2 instances available to handle the load for your application. br/>
How it works: The Auto Scaling works by you defining scaling policies based on CloudWatch alarms. When those alarms trigger, Amazon ECS automatically adjusts the desired count of tasks in your service. br/>
Exam Tips on ECS Service Auto Scaling: In the exam, answering questions on ECS Service Auto Scaling requires understanding the basic concept, importance, and workings of the feature. It will also be helpful to understand the correlation between Auto Scaling and CloudWatch alarms. You will also need to know when to apply auto-scaling. For example, when the load in your applications goes up or when there is a need to minimize costs. Remember, the key to successfully answering these questions is a clear understanding of what ECS Service Auto Scaling is, its importance and functionality.