It is a content that changes very often or changes based on the user that views it as it can depend on the location, device the user uses or other factors. It can help with personalised experienced for users.

Example of dynamic content

  • Websites that display different offers based on the location
  • blogs with different comments, posts, ads
  • gaming

Important
Dynamic content is hard/difficult to store in the Edge location because results can change very quickly.


Source
CloudFront and Terraform Essentials