Cost Model - AWS Storage Services Overview

Cost Model

Amazon EFS provides the capacity you need, when you need it, without having to provision storage in advance. It is also designed to be highly available and highly durable as each file system object (such as a directory, file, or link) is redundantly stored across multiple Availability Zones. This highly durable, highly available architecture is built into the pricing model, and you only pay for the amount of storage you put into your file system. As files are added, your EFS file system dynamically grows, and you only pay for the amount of storage you use. As files are removed, your EFS file system dynamically shrinks, and you stop paying for the data you deleted. There are no charges for bandwidth or requests, and there are no minimum commitments or up-front fees.

You can find pricing information for Amazon EFS at the Amazon EFS pricing page.