We're building a specialized Rails web app that gets deployed, customized and possibly extended (via additional engines) per tenant. Having a single VM per cust

We're building a specialized Rails web app that gets deployed, customized and possibly extended (via additional engines) per tenant. Having a single VM per customer is just so KISS, simplifying every step of the process, billing, security, data isolation, load management... Any other solution would become ludicrously complex in comparison, for no reason at all, buzzwords be damned.