title: Real difference between Wifi-Direct and Miracast
body: <p>those protocol is made by Wifi Alliance. After I google and research, I still cannot clearly separate concept between those two terms : <code>Miracast</code> and <code>Wifi-Direct</code>. And as I know, on StackOverFlow site still not have tag <code>Miracast</code> but <code>Wifi-Direct</code>. So, what does the real difference between those, or they just difference in business name ?</p>