Nowadays on the internet there are entire office solutions (for example Office 365, Google Sheets) that you can launch with the press of a button without having to install anything. Websites are no longer just websites, but huge programs with hundreds of thousands of lines of code.
With the Angular framework you can master these orders of magnitude. It allows us to bring large and long-lasting applications directly to the user in the browser.
Angular is supported by several large companies, such as Google. This results in an ever-increasing support for mobile platforms (NativeScript and Ionic).