Web developers need a server to host their websites or web apps. Shared hosting is a bad idea due to non-standard arbitrary limits, hosting companies messing with your files without asking, and lack of ssh access or any other ports. Cheap virtual private servers from DigitalOcean or Linode are good for anyone familiar enough with Linux (or FreeBSD with D.O.). But another option is the Platform-as-a-Service (PaaS).
OpenShift is a PaaS from RedHat. It is not a VPS, but also not a shared host. It is like Heroku or Google App Engine. You don't own the server and not even a virtual...