A solutions architect must migrate a Windows Internet Information Services (IIS) web application to AWS. The application depends on a file share hosted on the on-premises NAS. The architect plans to migrate the IIS web servers to Amazon EC2 instances in multiple Availability Zones and connect them to a replacement storage solution with an Elastic Load Balancer. Which replacement for the on-premises file share is MOST resilient and durable?

Amazon FSx for Windows File Server is the most resilient and durable option because it provides fully managed, highly available, and scalable file storage that is natively compatible with Windows applications and the SMB protocol. It supports Multi-AZ deployments for high availability and automatic backups for durability. Migrating to Amazon RDS is incorrect because RDS is a relational database service, not a file share service, and cannot host IIS application files. AWS Storage Gateway is incorrect because it provides hybrid cloud storage integration, not a fully managed cloud-native file share for EC2 instances. Amazon EFS is incorrect because it is a POSIX-compliant file system designed for Linux workloads and does not natively support the SMB protocol required by Windows IIS applications.