Angular is a framework for building web applications. It was created by Adam Abrons, who wanted to make web development easier by allowing interaction between the frontend and the backend. He named the framework after HTML, a language that developers use to write code. Angular is a popular choice for building applications and is used by many major companies.

The framework works by reading the HTML page and interpreting custom HTML attributes as directives. Then, AngularJS binds the model with the views, passing the data back and forth. This structure allows program logic to control which views appear and disappear and to respond to user input and program access rules. In addition to templates, Angular supports two-way data binding, which means that any changes to the DOM will be reflected in the program.

Angular’s component-based architecture makes it easy to break down complex code into smaller pieces. You can think of components as small user interface pieces that are encapsulated with functionality. These components can be accessed by other parts of the application using the Model-View-Controller pattern. Angular also supports event handling, which allows you to detect when changes have occurred in a component.

Angular also incorporates RxJS, a library for reactive programming. It uses observable streams to make HTTP requests and other common tasks.