AWS Fargate Deprecates Linux Platform Version 1.3.0 for ECS

Amazon Web Services (AWS) has officially announced the end of support for Linux platform version 1.3.0 in AWS Fargate for Amazon Elastic Container Service (ECS), with the deprecation taking full effect on June 30, 2026. This strategic decision by AWS aims to ensure that users leverage the most secure and up-to-date infrastructure for their containerized applications. The deprecation process began earlier, on June 15, 2026, when platform version 1.3.0 was marked as 'Retired.' From this date, customers were prevented from launching any new tasks or creating new services configured to use this specific platform version. However, existing tasks that were already running on version 1.3.0 were allowed to continue their operations until the final deprecation date. The critical deadline for this transition is June 30, 2026. On this day, AWS will automatically terminate all remaining running tasks that are still configured with platform version 1.3.0. This action underscores the necessity for users to proactively manage their Fargate environments and migrate to newer, supported platform versions. AWS strongly recommends that all users migrate their existing Fargate tasks and services to Linux platform version 1.4.0 or a more recent version. This migration is crucial not only for maintaining compatibility with the latest Fargate features but also for ensuring that applications continue to receive essential security updates, bug fixes, and ongoing support from AWS. After the deprecation date, platform version 1.3.0 will no longer receive any such updates, potentially exposing applications to vulnerabilities and operational issues. For services configured with the 'LATEST' platform version, AWS implements a 'force new deployment' option on the force update date. This mechanism ensures that any service pointing to a deprecated platform version is automatically updated, stopping old tasks and launching new ones on the current 'LATEST' platform version. However, standalone tasks or services with an explicitly set platform version are not affected by this automatic force update and require manual intervention for migration. This deprecation highlights AWS's commitment to continuously improving its Fargate service, encouraging users to adopt modern practices for container management and to regularly review and update their infrastructure configurations.