Something I've wondered about for a while: does GCS allow 3rd-party access via OAuth? One of my biggest annoyances with S3 is you have to automate generating signed URLs in order to allow apps to access files.
it dependes. you can invite somebody to our gcloud project and give him only access for a specific bucket, which means he can access the content via oauth. unfortunatly it does not work in all cases i.e. some hyperlinks do not work reliably when you create static pages with relative links, because after authentication it rewrites the uri's.