AJAX is a group of interrelated web development methods which allow web applications to retrieve data from other servers or databases in the background without interfering with the display or behaviour of the existing page. This has the advantage that the web page doesn't need to be reloaded and only the necessary information must be retrieved from the server.
Benefits:
- No page reload – product listings or other content can be changed dynamically without page reload.
- Faster – there is no page reload, only the minimum data must be retrieved from the server back to the client.
- User friendly – content can be changed/adapted dynamically, therefore the surfing experience is closer to desktop applications such as Word or Photoshop.
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