Zeit Now also seems to target serverless functions, not stateful applications.
For instance Zeit can host a standard node server to serve your application if necessary https://zeit.co/docs/v2/deployments/official-builders/node-j...
Whereas on Zeit Now the root of the website can be a web server written in multiple languages, and offer the ability to make your own "Lambda Builder" if necessary https://zeit.co/docs/v2/deployments/builders/overview
/* /.netlify/functions/app/:splat 200!