Internet Explorer
Internet Explorer (IE) is a discontinued web browser developed by Microsoft, first released in 1995 as part of the Windows operating system. It was once the dominant browser globally, known for its integration with Windows and support for proprietary technologies like ActiveX. However, it was phased out in favor of Microsoft Edge, with its final version (IE 11) reaching end-of-life in June 2022.
Developers should learn about Internet Explorer primarily for legacy support and maintenance of older web applications, as many enterprise systems and internal tools were built specifically for IE compatibility. It's also useful for understanding browser history, cross-browser testing to ensure backward compatibility, and debugging issues in environments where IE might still be in limited use, such as in certain corporate or government settings.