# Models, Views, & Collections [Deprecated](../../../../getting/release/squirro-release-process.md#getting-squirro-process) ## What is Backbone.js? [Backbone.js](https://backbonejs.org/) gives structure to web applications by providing models with key-value binding and custom events, collections with a rich API of enumerable functions, views with declarative event handling, and connects it all to your existing API over a RESTful JSON interface.