# EFS

## Elastic File System (EFS)

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* **Serverless**, fully elastic file storage for `EC2`.
  * *Meaning that it **automatically grows and shrinks as you add and remove files** with no need for management or provisioning.*
* Simple, scalable for Linux-based workloads for use with Cloud services and on-premise resources.
  * Built to scale on demand without disrupting applications.
* Designed to **provide massively parallel shared access** to thoursands of `EC2` instances.
  * *This means that it is a good shareable storage for different services.*
* Amazon EFS is a regional service storing data within and across multiple Availability Zones (AZs) for extremely high-durability (99.999999999%) and high-availability (99.99%).
* Supports protocol `NFSv4 (Network File System v4)`.