Just a note, you don't pay for sending data to any provider (ingress) only for pulling data out / serving it (egress). You can put your GCS buckets behind Clou

Just a note, you don't pay for sending data to any provider (ingress) only for pulling data out / serving it (egress). You can put your GCS buckets behind Cloudflare to take advantage of "interconnect" pricing of $.04/GB. Disclaimer: I work on Compute Engine.