This update allows containers to use memory-backed file systems (tmpfs) for temporary storage without writing data to persistent storage, benefiting performance-sensitive and security-sensitive applications by storing caches, secrets, or temporary files in-memory.
Supporting tmpfs mounts enhances security through ephemeral data handling and enables configurations like read-only root file systems while allowing selective writable directories. This feature is available in all AWS regions supporting ECS, Fargate, and ECS Managed Instances, accessible via various AWS interfaces.
Source & further reading
Amazon ECS now supports tmpfs mounts on AWS Fargate and ECS Managed Instances ↗Source published 2026-01-06. This report was prepared with AI assistance from the linked primary-source material. Claims and limitations should be checked against the original announcement or research.