With AWS, you can use whatever CMS you like, including WordPress, Drupal, Joomla, and more. AWS also supports and provides SDKs for popular platforms like Java, Ruby, PHP, Node.js, and .Net.
Your customers can be anywhere in the world. With AWS you can have a datacenter hosting your website in any geography you choose with just a few mouse clicks. It is flexible and Dynamically scalable as per traffic.