The document provides an introduction to JSON and AJAX. It discusses what JSON is, how it can be used to structure data in JavaScript objects, and why it is easier to work with than XML. It then covers what AJAX is and how it can be used to asynchronously retrieve and update data in web applications without reloading the page. Examples are given of how JSON and AJAX can be implemented in Domino applications by retrieving JSON from views via URLs or making AJAX requests to dynamically load and validate data.