A developer is building a global video search app. Each video file averages 2.5 TB. Files must be available with instant access for the first 90 days; after 90 days, retrieval times of over 10 minutes are acceptable. Which solution meets these requirements most cost-effectively?

The correct solution is to use Amazon S3 Glacier Instant Retrieval for the first 90 days and then transition to S3 Glacier Flexible Retrieval. S3 Glacier Instant Retrieval offers millisecond retrieval times, meeting the "instant access" requirement for the initial 90 days, and is cost-effective for infrequently accessed data that needs quick retrieval. After 90 days, S3 Glacier Flexible Retrieval provides even lower storage costs with retrieval times ranging from minutes to hours, satisfying the "over 10 minutes are acceptable" condition. Incorrect options: EFS is a file storage service for EC2 instances, not suitable for 2.5 TB video files in a global search app due to cost and scalability. S3 Glacier Deep Archive has retrieval times of hours, failing the "instant access" requirement for the first 90 days. EBS is block storage for EC2 instances, not designed for large-scale, globally accessible video file storage.