title: 'Hosting' users domain names on a CMS
body: <p>I've carried out quite a bit of research and searching to find out how CMS and web applications such as Wordpress.com work when it comes to mapping user domains. </p>
  
  <p>As you may be aware, users can add their custom domain onto a Wordpress.com website - this is what I'm looking to achieve for my own service I'm building. It's code base is PHP with a MySQL backend. </p>
  
  <p>How is this done? My best guess was through a database lookup and a redirect to the correct wordpress subdomain. If anyone has any ideas on this I would really appreciate your input. Thanks! </p>