Software as a Service (SaaS) is simply the idea that instead of paying for the bits and running them on your server, you ought to be able to buy the service you want and let somebody else manage it. Of course, this is nothing new. I have my website hosted by people I've never met. I don't care too much about the bits that actually run the server, I just want it to run and I don't want to think about it. In this case study overview we meet Remend one of the new crop of companies who are moving to a SaaS business model.