title: how Alexa manages my TP-Link HS110 smart wifi plug
body: <p>I have an Alexa "Echo 7QE", and a smart wifi plug "TP-Link HS110", both connected to the same wifi network at home.</p>
  
  <p>They work perfect.</p>
  
  <p>a) plug controlled from Android, using "Smart Life"</p>
  
  <p>b) Alexa configured perfect, using Android "Amazon Alexa"</p>
  
  <p>c) Alexa discovered the plug and manages it under my voice control. Perfect.</p>
  
  <p>Now I am asking myself what kind of technology they are using.
  How do they communicate?</p>
  
  <p>Unfortunately my Google searches are quite meaningless, maybe because I don't ask the proper questions.</p>
  
  <p>I read Alexa uses AWS Lambda.
  TP-Link also has a Cloud API</p>
  
  <p>But I don't know how to match it all together.</p>
  
  <p>A simple question: does Alexa talk direct to TP-Link over my local wifi network or
  the communication is through some cloud ?</p>
  
  <p>If so (local), what port is it using ?</p>
  
  <p>Thanks for any pointers.</p>