: Users could drag a website favicon to the Windows taskbar to "pin" it, allowing the site to function more like a standalone desktop application.

: The 32-bit version featured the new "Chakra" JavaScript engine. It utilized a background thread for Just-In-Time (JIT) compilation , allowing users to interact with pages while the browser generated faster code in the background.

: It was the first version of IE to achieve a perfect or near-perfect score on the Acid3 test (reaching 100/100 after the test was revised) and introduced support for HTML5, CSS3, and SVG. System Requirements and Lifecycle

: The last regular security update was released on January 14, 2020 , though some versions on Windows Server 2008 remained eligible for Extended Security Updates (ESU) until early 2023.