title: How does Direct Web Remoting (DWR) work?
body: <p>How exactly or what exactly does Direct Web Remoting (DWR) do?
  While I have already gone through the official site <a href="http://directwebremoting.org/" rel="noreferrer">http://directwebremoting.org/</a>
  I wanted to understand in simple language..</p>
  
  <p>Specifically I have following questions;
   1. While engine.js is standard Javascript library, how exactly does it help in including that in our app ?
   2. What is so special about DWR that cannot be done by normal Javascript / AJAx combination?</p>
  
  <p>Thank you.</p>