A company runs business applications in an on-premises data center and in the AWS Cloud. The company needs a shared file system that can be available to both environments.
D. Amazon Elastic File System (Amazon EFS)
"EFS is a file storage service for use with Amazon compute (EC2, containers, serverless) and on-premises servers. EFS provides a file system interface, file system access semantics (such as strong consistency and file locking), and concurrently accessible storage for up to thousands of EC2 instances."
https://aws.amazon.com/efs/faq/
The correct answer is D, Amazon Elastic File System (Amazon EFS) provides a simple, scalable, and fully managed shared file system that can be accessed from multiple instances across different availability zones, regions, and VPCs. This makes it ideal for hybrid cloud environments where resources are located in both on-premises data centers and the AWS Cloud.
The AWS service that meets the requirement of a shared file system that can be available to both on-premises data center and AWS Cloud is Amazon Elastic File System (Amazon EFS) (Option D).
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