Last I checked, the recommended production config of mongo, in the simplest case, required at least 3 separate servers configured in a master, slave, and arbitrator cluster.  Compared with setting up AWS multi zone replicated RDS SQL servers (push a button), it is very much a pain.<p>Yes compose.io helps.<p>Edit:  <a href="https:&#x2F;&#x2F;docs.mongodb.org&#x2F;manual&#x2F;tutorial&#x2F;deploy-config-servers&#x2F;" rel="nofollow">https:&#x2F;&#x2F;docs.mongodb.org&#x2F;manual&#x2F;tutorial&#x2F;deploy-config-serve...</a>