title: Differences between XMLHTTP and ServerXMLHTTP
body: <p>I'm trying to write an Excel add-in that can get data from a web service into Excel.</p>
  
  <p>To use it, the user just needs to type a function name provided by the add-in. I found two articles implementing HTTP requests in VBA: <a href="http://msdn.microsoft.com/en-us/library/ms759148%28v=vs.85%29" rel="noreferrer">XMLHTTP</a> and <a href="http://msdn.microsoft.com/en-us/library/ms762278%28v=vs.85%29" rel="noreferrer">ServerXMLHTTP</a>.</p>
  
  <p>I have difficulty with using them. I don't know which one to use. What are the differences between XMLHTTP and ServerXMLHTTP?</p>