Auto Scaling

2025/09/09 - 1 updated api methods

Changes   Added WaitForTransitioningInstances parameter to the CancelInstanceRefresh API, allowing the caller to cancel an instance refresh without waiting for on-going launches and terminations.

2025/06/18 - 1 updated api methods

Changes   Add IncludeInstances parameter to DescribeAutoScalingGroups API

2025/05/29 - 5 updated api methods

Changes   Add support for "apple" CpuManufacturer in ABIS

2024/11/22 - 2 updated api methods

Changes   Now, Amazon EC2 Auto Scaling customers can enable target tracking policies to take quicker scaling decisions, enhancing their application performance and EC2 utilization. To get started, specify target tracking to monitor a metric that is available on Amazon CloudWatch at seconds-level interval.

2024/11/20 - 5 updated api methods

Changes   With this release, customers can prioritize launching instances into ODCRs using targets from ASGs or Launch Templates. Customers can express their baseline instances' CPU-performance in attribute-based Instance Requirements configuration by referencing an instance family that meets their needs.

2024/11/18 - 4 updated api methods

Changes   Amazon EC2 Auto Scaling now supports Amazon Application Recovery Controller (ARC) zonal shift and zonal autoshift to help you quickly recover an impaired application from failures in an Availability Zone (AZ).

2024/11/07 - 3 updated api methods

Changes   Auto Scaling groups now support the ability to strictly balance instances across Availability Zones by configuring the AvailabilityZoneDistribution parameter. If balanced-only is configured for a group, launches will always be attempted in the under scaled Availability Zone even if it is unhealthy.

2024/10/31 - 2 updated api methods

Changes   Adds bake time for Auto Scaling group Instance Refresh

2024/01/29 - 5 updated api methods

Changes   EC2 Auto Scaling customers who use attribute based instance-type selection can now intuitively define their Spot instances price protection limit as a percentage of the lowest priced On-Demand instance type.

2023/11/15 - 5 updated api methods

Changes   This release introduces Instance Maintenance Policy, a new EC2 Auto Scaling capability that allows customers to define whether instances are launched before or after existing instances are terminated during instance replacement operations.