AngularJS is one such framework which is considered as the versatile front-end framework. And, the only reason behind it is the languages used in AngularJS- JavaScript, and HTML. Do you know that more than 80% of developers use JavaScript? This makes JavaScript the 2nd best language to be used among the developers across the world. (Source)
And, HTML ranks on the #3 by the same source because of being the easiest language to adopt and it is the base for various other languages to learn and use. Well, AngularJS is now popularly used to develop the IoT devices as well.
On the technological front, AngularJS helps on the front-end part of the web application and does what primarily a HTML will do to talk to the browser to do what we expect it to do, thus it makes an ideal solution for all server oriented technology challenges that existed earlier.