You can now configure Amazon EC2 instances to mount Amazon EFS file systems using the EC2 Launch Instance Wizard. This integration simplifies the process of configuring EC2 instances to mount EFS file systems at launch time with recommended mount options. Amazon Elastic File System (Amazon EFS) provides a simple, scalable, fully managed elastic NFS file system for use with AWS Cloud services and on-premises resources. Multiple EC2 instances can mount an EFS file system and share file data using standard Linux tools and commands.
from Recent Announcements https://aws.amazon.com/about-aws/whats-new/2019/10/amazon-efs-now-in-ec2-launch-instance-wizard/