what is efs

Amazon Elastic File System (EFS) is a cloud-based file storage service provided by Amazon Web Services (AWS) . It is designed to provide scalable, elastic, concurrent, and encrypted file storage for use with both AWS cloud services and on-premises resources. Amazon EFS is built to be able to grow and shrink automatically as files are added and removed, and it supports Network File System (NFS) versions 4.0 and 4.1 (NFSv4) protocol. Amazon EFS provides serverless, fully elastic file storage so that you can share file data without provisioning or managing storage capacity and performance. Multiple compute instances, including Amazon EC2, Amazon ECS, and AWS Lambda, can access an Amazon EFS file system at the same time. According to Amazon, use cases for this file system service typically include content repositories, development environments, web server farms, home directories, and big data applications.