Amazing how one post will tell you that, at your scale, S3 is stupid and other posts will tell you that at your not-small-enough-and-yet not-big-enough scale S3

Amazing how one post will tell you that, at your scale, S3 is stupid and other posts will tell you that at your not-small-enough-and-yet not-big-enough scale S3 is the only option. I say stick with cloud. If cost is an issue go negotiate a better contract — GCP will probably give you a nice discount. Setting up a highly available service at that scale is not a walk in the park. Can you afford the distractions from your primary app while you figure it out?