Amazon ECS Express Mode now supports custom task definitions

Published
July 1, 2026
https://aws.amazon.com/about-aws/whats-new/2026/07/amazon-ecs-express-mode-custom-task-def/

Amazon ECS Express Mode Custom Task Definitions

Amazon ECS Express Mode now supports custom task definitions, allowing you to use existing ECS application configurations and advanced task-level customizations with Express Mode’s simplified deployment experience.

ECS Express Mode makes it easy to deploy containerized web applications and APIs by automatically handling load balancing, networking, auto scaling, monitoring, and deployments. With this update, you can extend Express Mode services with advanced task definition capabilities, including observability and security sidecars, custom container health checks, ulimits and Linux runtime settings, and FireLens for custom log routing.

What to do

  • Create or update your ECS Express Mode service by passing your task definition using the AWS Management Console, AWS CLI, AWS SDKs, or infrastructure-as-code tools.
  • Manage your application either through task definition updates or directly through Express Mode.

Source: AWS release notes




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