Answer: AWS Storage Gateway volume gateway

## Explanation **AWS Storage Gateway Volume Gateway** is the correct solution for connecting on-premises applications to AWS Cloud storage using iSCSI connectivity. ### Key Points: 1. **iSCSI Protocol Support**: AWS Storage Gateway Volume Gateway provides iSCSI connectivity, which allows on-premises applications to access cloud storage as if it were local storage. 2. **Use Case**: This solution is specifically designed for scenarios where on-premises applications need to use cloud storage as block storage volumes via iSCSI. 3. **How It Works**: - Volume Gateway presents cloud-backed storage volumes to on-premises applications via iSCSI - It caches frequently accessed data locally for low-latency access - Data is asynchronously backed up to Amazon S3 or Amazon EBS 4. **Why Other Options Are Incorrect**: - **AWS Storage Gateway File Gateway**: Uses NFS/SMB protocols for file storage, not iSCSI for block storage - **Amazon API Gateway**: A managed API service for creating, publishing, and managing APIs, not for storage connectivity - **AWS Transit Gateway**: A network transit hub for connecting VPCs and on-premises networks, not for iSCSI storage connectivity 5. **Benefits**: - Enables hybrid cloud storage architecture - Provides disaster recovery capabilities - Offers cost-effective cloud storage integration - Maintains compatibility with existing on-premises applications using iSCSI This solution is ideal for backup and disaster recovery, storage tiering, and extending on-premises storage capacity to the cloud while maintaining iSCSI protocol compatibility.

Author: Ritesh Yadav