EFS is the best option as Shared File System
Use Cases and Deployment Scope
We use EFS as a shared file system for a WebServer application, it's easy to mount of linux servers and all of them can read or write to the same storage. Excellent response time and no need to provision storage beforehand.
Pros
- No limit on IOPS
- No limit on storage size
- Can optimize cost by using infrequent access tier
Cons
- Integration with Windows instances is not supported
Return on Investment
- Reduce administration burden of storage
- Reduce over-all cost by using infrequent access tier
Alternatives Considered
Amazon FSx
Other Software Used
Amazon FSx, Amazon S3 (Simple Storage Service), AWS Backup

