For those looking for a low-cost, simple Dgraph deployment option, I’ve created a guide in my dgraph-tools repo for deploying Dgraph to fly.io. Fly is not free, but for small graphs or tests, you can deploy a single group cluster for less than $10/mo. IMO, for launching and managing cloud apps, it’s a lot less complex than setting up VMs on the major cloud providers.
The provided configuration file will allow you to have a cluster up in minutes.