Not to knock on your service/business-plan, but I can't imagine how focusing on a particular stack gives you any advantage. To me, the bare PaaS offering inclu

Not to knock on your service/business-plan, but I can't imagine how focusing on a particular stack gives you any advantage. To me, the bare PaaS offering includes not only the bits that run the app (nodejs workers in your case) but a datastore (minimum one choice each from RDBMs or kv-stores), a backend cache, and a front-end cache or load-balancer. At this point, I imagine your PaaS infrastructure is already plenty 'polyglot', and it seems to me that adding additional tool support wouldn't complicate the backend more. Of course, I do grant that manpower can be a limiting factor. (I do also grant that I may be a naive armchair theorist spouting hot air) I'm interested to hear what you feel your business advantage is. Is it branding (e.g., someone wanting to host a nodejs project is more likely to head your way), or does the focus really give you a lead in the arms race against the 'polyglot'-er services.