The technologies that enable the Internet tend to change, progress and evolve at rapid speeds, as requirements change and developers build better versions of the software. Angular is a case in point, with wide changes in just a few years. Google developed AngularJS in 2009 and version 1.0 was released in 2012. Angular has since dominated the world of open-source JavaScript frameworks, with the enthusiastic support and widespread adoption among both enterprises and individuals. As a result, Angular has evolved from the AngularJS version 1.0 to Angular version 2.0 and now the latest Angular version 4.0, all in just five years.