GCS supports the S3 API modulo resumable uploads (we do them differently): https://cloud.google.com/storage/docs/migrating https://cloud.google.com/storage/docs

GCS supports the S3 API modulo resumable uploads (we do them differently): https://cloud.google.com/storage/docs/migrating https://cloud.google.com/storage/docs/migrating Feel free to send me a note, my contact info is in my profile (I helped build preemptible VMs and I'm sort of fascinated you're doing this).