With widespread praise for AngularJS, Angular builds upon that foundation to make the framework faster, more scalable, and modern. Organizations that found value in AngularJS will find more value in Angular.
Angular has matured to provide tools that scale and sports an active developer community. The community has provided tutorials, blog posts, and videos that solve many common problems.
One of Angular's most notable advantages is its structure that supports learning and understanding. New developers learn Angular by solving problems and understanding the small set of core framework features. When they're ready to learn more advanced features, they can quickly build upon that knowledge and gradually learn more of the framework.
The Angular Styleguide provides a structured and organized approach to building Angular apps that helps teams maintain this learning path. New developers are less likely to be confused when looking through a codebase. They will quickly learn how to contribute to complex features. The Styleguide is a crucial element to your team's documentation.
Angular's code automation and generation simplify the bootstrapping work needed to create new features. Schematics in the Angular CLI also go a long way to help newcomers feel comfortable making new components, services, and features.
While there have been some tricky Angular releases over the years, the Angular team prioritizes stability as a core tenant of the framework's development. Teams following the Angular Styleguide and staying up-to-date with the latest version will experience seamless releases that often result in performance improvements. Many tools and libraries also keep pace with the latest and greatest version of Angular, which adds to the benefits received from staying up-to-date.
Libraries like Nx go a step further to develop tooling on top of the framework for monorepos, build-caching, and automation. Angular's structured releases help the community build impressive tooling that can be maintained and updated as the framework changes.
Angular was designed for mobile from the ground up. Aside from limited processing power, mobile devices have other features and limitations separate from traditional computers. Touch interfaces, little screen real estate, and mobile hardware have all been considered in Angular.
Desktop computers will also see dramatic improvements in performance and responsiveness.
Like React and other modern frameworks, Angular can leverage performance gains by rendering HTML on the server or even in a web worker. Depending on application/site design, this isomorphic rendering can make a user's experience feel even more instantaneous.
Despite being a complete rewrite, Angular has retained many of its core concepts and conventions with AngularJS, e.g. a streamlined, "native JS" implementation of dependency injection. Programmers who are already proficient with AngularJS will have an easier time migrating to Angular than another library like React or a framework like Svelte.
The first iteration of AngularJS provided web programmers with a highly flexible framework for developing applications. While that framework was helpful, it became evident that it was often too relaxed. As best practices evolved, the community developed a structure that became overwhelmingly endorsed.
Note that "Transitional Architecture" refers to a style of Angular.js application written in a way that mimics Angular's component style, but with controllers and directives instead of TypeScript classes.