AmazonS3 with the Standard storage classis the best solution:
Encryption: SSE-S3 ensures server-side encryption of the data, meeting compliance requirements.
Immediate access: The Standard storage class provides low-latency and high-throughput access to data.
Multi-location storage: Cross-Region replication ensures data is stored in multiple AWS Regions for redundancy.
Why Other Options Are Not Ideal:
Option B:
Amazon EFS is more costly and suited for file systems rather than object storage.Not cost-effective.
Option C:
Amazon EBS is block storage and not optimized for object storage like PDFs. Backup schedules do not ensure immediate availability.Not suitable.
Option D:
S3 Glacier Flexible Retrieval is designed for archival, not immediate access.Does not meet access requirements.
AWS References:
Amazon S3 Standard Storage:AWS Documentation - S3 Storage Classes
Amazon S3 Cross-Region Replication:AWS Documentation - Cross-Region Replication
AWS Encryption Options:AWS Documentation - S3 Encryption
