We published a few dev.to blogs to help you configure Fastly Object Storage with:
Fastly’s CDN: Connecting your CDN to Fastly Object Storage - DEV Community
Fastly Compute: Go Beyond the Basics: Connecting Compute to Object Storage with the Official S3 Clients - DEV Community
SFTPGo for file sharing and management: Private, cost-effective cloud storage that you will want to use! - DEV Community
Check them out and let us know what questions you have!