Until now, we have been building a classic web application: we send a request to the server, the server processes the request, and we render the result and show it to the client. Over the last decade, however, the way we build web applications has changed considerably. Now we have JavaScript and JSON/XML, which allow AJAX-based web applications and push more and more behavior push to the client, including validation, rendering parts of the screen, and so on.
This chapter starts with REST1 (REpresentational State ...