Angular is a popular open-source web application framework developed by Google. It is widely used for building dynamic single-page applications (SPAs) and complex web applications. Angular follows the Model-View-Controller (MVC) architectural pattern and offers a comprehensive set of features to simplify the development process. Here are some key features of Angular: 1. TypeScript: Angular is built with TypeScript, a statically typed superset of JavaScript. TypeScript adds static typing and other features to JavaScript, making it more robust and maintainable. 2. Two-way data binding: Angular provides a powerful data binding system that allows synchronization of data between the model and the view. Changes in the model automatically reflect in the view, and vice versa, eliminating the need for manual updates. 3. Component-based architecture: Angular applications are built using components, which are self-contained, reusable building blocks. Each component encapsulates its own HTML templates, CSS styles, and business logic, promoting modularity and maintainability. 4. Dependency Injection (DI): Angular has a built-in dependency injection system that helps manage the dependencies between components and services. DI makes it easier to create, manage, and test components by providing the required dependencies automatically. 5. Routing: Angular offers a powerful routing module that enables the creation of single-page applications with multiple views. Developers can define routes, navigate between different views, and load components dynamically based on the current route. 6. Reactive forms: Angular provides robust support for building complex forms with features like validation, value tracking, and handling user input. Reactive forms use an observable-based approach to managing form state and data flow. 7. Directives: Angular has a rich set of directives that allow developers to extend HTML with custom behavior. Directives enable dynamic manipulation of the DOM, adding or removing elements, applying styles, and handling events. 8. Testing: Angular provides excellent support for testing applications. It includes a testing framework called TestBed, which allows developers to write unit tests, integration tests, and end-to-end tests for their Angular applications. 9. Performance optimization: Angular includes several performance optimization techniques, such as ahead-of-time (AOT) compilation, lazy loading of modules, and tree shaking. These features help reduce the application's initial loading time and improve overall performance. 10. Mobile support: Angular offers tools like Angular Mobile Toolkit and Angular Material, which facilitate the development of mobile-responsive applications. It provides a consistent experience across different devices and screen sizes. Overall, Angular provides a comprehensive framework for building robust, scalable, and maintainable web applications with a focus on productivity and performance.