Which AWS service meets these requirements?
Amazon Elastic Block Store (Amazon EBS)
Amazon S3
Amazon ElastiCache
Amazon Elastic File System (Amazon EFS)
Explanations:
Amazon Elastic Block Store (EBS) provides block storage for use with EC2 instances only and is not natively accessible from on-premises environments.
Amazon S3 is an object storage service and does not provide a shared file system interface, making it unsuitable for applications requiring file system access.
Amazon ElastiCache is a managed in-memory data store for caching purposes, not a shared file system for file-based workloads across environments.
Amazon Elastic File System (EFS) provides a scalable shared file system accessible from both AWS and on-premises environments via AWS Direct Connect or VPN connections.