AWS News Blog

Amazon Elastic Container Service (Amazon ECS) service auto scaling automatically adjusts task counts to meet workload demand with comprehensive scaling policies, including predictive scaling for recurring traffic patterns, scheduled scaling for planned events, and target tracking to scale dynamically on real-time metrics.

You can choose proactive scaling by using predictive scaling (automatic) and scheduled scaling (customer-defined), or reactive scaling by using target tracking with just a target to scale on. Amazon ECS service auto scaling adjusts the number of tasks in an ECS service based on Amazon CloudWatch metrics, such as average CPU/Memory usage, request count per target, a custom metric such as queue depth, or demand surges by using advanced machine learning (ML) algorithms.

With today’s launch, Amazon ECS service auto scaling now detects and responds to load changes faster with support for high resolution (20-second) metrics and metric publishing optimizations. In AWS benchmarking tests, time to trigger scale-out improved from 363 seconds to 86 seconds (76% faster, 4.2x), and total time to scale and provision new tasks improved from 386 seconds to 109 seconds (72% faster, 3.5x)