Application Auto Scaling now offers customers more visibility about the scaling decisions it takes for an auto scaled resource. Application Auto Scaling (AAS) is a service that offers standardized experience across 13 different AWS services beyond Amazon EC2, for example Amazon DynamoDB provisioned read and write capacity, and Amazon Elastic Container Service (ECS) services. Application Auto Scaling takes scaling actions based on the customer-defined scaling policies that act as a guideline for scaling decisions. Until now, customers only got details about successful and not about deferred scaling actions. With this feature, customers get more insights about scaling decisions that do not lead to a scaling action in both descriptive and machine-readable format.
Source:: Amazon AWS