Strongly consistent replication is a harder problem. Working on it but it'll take a while. You can get replication today if you put a custom domain in front of your bucket and turn on cache.

With R2 you can also use a bucket or few buckets per tenant whereas with S3 that's not possible (even if you have a fat ENT contract with them from what I've heard). We've extended the S3 spec to make it possible to list more than 1000 buckets [1]. Currently we still ask that if you need more than 1k buckets that you open a customer support request for us to discuss your use-case.

[1] https://developers.cloudflare.com/r2/data-access/s3-api/exte...