A company is migrating Linux-based web servers to AWS. The web servers must access files in a shared file store, and the application cannot be changed. What should a solutions architect do?
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Correct answer: Create an Amazon Elastic File System (Amazon EFS) file system. Mount the EFS file system on all web servers..
Why this is the answer
The correct solution is to create an Amazon Elastic File System (EFS) and mount it to all web servers. EFS provides a scalable, shared file system that multiple EC2 instances can access concurrently using the NFS protocol, which is ideal for Linux-based applications requiring shared file storage without code changes. Amazon S3 is object storage, not a file system, and cannot be directly mounted by EC2 instances in the same way a file system can. CloudFront is a content delivery network (CDN) and is not designed for shared file storage for backend servers. Amazon EBS volumes are block storage and can only be attached to a single EC2 instance at a time, making them unsuitable for shared access across multiple web servers.
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