This document discusses building client-side web applications with WordPress and the WP-API. It explains the benefits of loading content and templates client-side like improved performance, scalability and user experience. Code examples show how to load posts from the WP-API into AngularJS and display them on the client-side rather than using PHP on the server-side. Case studies demonstrate how specific companies like CodeCavalry use WordPress for user authentication and content with a single page application for features like user profiles and commenting. Resources are provided for learning more about the WP-API and building WordPress driven applications.