It's similar to other Platform as a Service options. You build the app you want. The benefit is that you don't have to worry about setting up and scaling the ar

It's similar to other Platform as a Service options. You build the app you want. The benefit is that you don't have to worry about setting up and scaling the architecture. For example you could deploy WordPress on AppFog PaaS. I don't think bluemix officially support PHP but PHP is there. Blue mix supports node or rails. so basically any node or rails app you wanted to build could be hosted.