title: How to migrate an add-in to Office 2013?
body: <p>I've found <a href="http://msdn.microsoft.com/en-us/library/office/apps/fp142161%28v=office.15%29" rel="noreferrer">this link</a>, the bottom line of which foretells that what I've been using this far to create Office add-ins (i.e. good, old, nice C# code) is to be entirely exchanged for JavaScript.</p>
  
  <p>For instance, we've got a solution that puts a set of buttons on the ribbon and communicates with a CRM server to add data (one in Outlook and one in Word). Will those need to be rewritten as a whole?!</p>
  
  <p>I wish to use VSTO if possible (AddInExpress has been said not to be reliable, apparently). Suggestions?</p>