Posted On: Mar 19, 2021

AWS Fargate platform version 1.4.0 is now the LATEST version. All new Amazon Elastic Container Service (Amazon ECS) Tasks or ECS Services that use the Fargate launch type and have the platformVersion parameter set to LATEST or not specified will run on platform version 1.4.0. The new version has features such as Amazon Elastic File System support and Amazon ECS Exec.  

An AWS Fargate platform version is a combination of the kernel and container runtime version. The LATEST flag is the default value of platform version field for an ECS task or an ECS service that runs on AWS Fargate. Until today, ECS tasks or ECS services with the platform version set to LATEST or without a platform version resolved to PV 1.3.0. With the LATEST flag updated, all new task or service launches will resolve to 1.4.0. Existing tasks or services will continue to remain on 1.3.0 until you redeploy them. If you don't yet want to start using PV 1.4.0, you can explicitly specify PV 1.3.0 using the platformVersion parameter.

Read more about platform version 1.4.0 considerations here and key changes in the blog post here.