title: AWS storage choice for file system S3 or EFS?
body: <p>I want to use file system to store xml files being received from SFTP connection to EC2  instance. Which storage to choose S3 or EFS? Once files are stored, I want to read the files and process data. 
  My understanding is that we should choose EFS as S3 is not recommended to mount a file system. Also, it is easy to manage directories and sub-directories  permission with EFS.</p>