title: What is middleware exactly?
body: <p>I have heard a lot of people talking recently about <em>middleware</em>, but what is the exact definition of middleware? When I look into middleware, I find a lot of information and some definitions, but while reading these information and definitions, it seems that mostly all 'wares' are in the middle of something. So, are all things middleware?</p>
  
  <p>Or do you have an example of a ware that isn't middleware?</p>