[arunoda]

We don't have insight on what our customer's use mostly.

We use existing technologies. Anyone can use any cloud Database service. We've datacenters on San Fransisco and in Belgium. So, based on those users can choose where they need to deploy their DBs.

Usually we recommend to configure databases via env variables. Users can also use our [now secrets](https://zeit.co/docs/getting-started/secrets) service as well to avoid hard-coding secrets.