Answer: Migrate the file share to Amazon FSx for Windows File Server.

## Explanation **Correct Answer: C - Migrate the file share to Amazon FSx for Windows File Server** ### Why Amazon FSx for Windows File Server is the best choice: 1. **Windows-native compatibility**: Amazon FSx for Windows File Server is built on Windows Server and provides fully managed Windows file shares with native SMB protocol support. This is crucial for IIS web applications that typically use Windows file sharing protocols. 2. **High availability and durability**: FSx for Windows File Server offers Multi-AZ deployments that automatically replicate data across Availability Zones, providing high availability and durability. This aligns perfectly with the requirement for "MOST resilient and durable." 3. **Seamless integration**: EC2 instances can easily mount FSx file shares using the SMB protocol, just like they would with on-premises Windows file servers. ### Why other options are not optimal: **A. Amazon RDS**: - RDS is a managed relational database service, not a file share solution - Designed for structured data in databases, not file shares - Not compatible with Windows file sharing protocols **B. AWS Storage Gateway**: - Primarily designed for hybrid cloud scenarios to connect on-premises environments to AWS storage - While it can provide file shares, it's not the most resilient option for a fully cloud-native deployment - Better suited for migration scenarios where maintaining on-premises access is needed **D. Amazon EFS**: - Designed for Linux-based workloads using NFS protocol - Not compatible with Windows file sharing (SMB) protocols - While highly available and durable, it's not suitable for Windows IIS applications ### Key Considerations: - The scenario specifies a **Windows IIS web application** that needs file share access - The solution requires **multiple Availability Zones** for resilience - **Amazon FSx for Windows File Server** provides: - Native Windows SMB file shares - Multi-AZ deployment options - Automatic backups and data replication - Seamless integration with EC2 instances - Managed service with high durability (99.999999999% durability) This solution provides the highest level of resilience and durability while maintaining compatibility with the Windows IIS application requirements.

Author: LeetQuiz Editorial Team