solutions-architect video for a biomedical research firm operates a file exchange system for external research partners to upload and download experimental
A biomedical research firm operates a file exchange system for external research partners to upload and download experimental data. Currently, the system runs on two Amazon EC2 Linux instances, each configured with Elastic IP addresses to allow access from trusted IPs. File transfers use the SFTP protocol, and Linux user accounts are manually provisioned to enforce file-level access control. Data is stored on a shared file system mounted to both EC2 instances. The firm wants to modernize the solution to a fully managed, serverless model with high IOPS, fine-grained user permission control, and strict IP-based access restrictions. They also want to reduce operational overhead without sacrificing performance or security. Which solution best meets these requirements?