This is how we work at fastcomments... soon we will have a shard in each major continent and will just deploy changes to a shard, run e2e tests, and then roll o

This is how we work at fastcomments... soon we will have a shard in each major continent and will just deploy changes to a shard, run e2e tests, and then roll out to the rest of the Shards. But if you have a high risk system or a business that values absolute quality over iteration speed, then yeah you want dev/staging envs...