What is Microsoft edge?
Microsoft Edge (previously code-named Project Spartan and often referred to simply as Spartan) is a web browser under development by Microsoft. Officially unveiled on January 21, 2015, and first publicly released as a preview on March 30, 2015, it will replace Internet Explorer as the default browser of Windows 10 PCs, smartphones and tablets.
In December 2014, writing for ZDNet, technology writer Mary Jo Foley reported that Microsoft was developing a new web browser codenamed "Spartan" for Windows 10. She claimed that "Spartan" would be treated as a new product separate from Internet Explorer, with Internet Explorer 11 retained alongside it for compatibility reasons.
In early-January 2015, The Verge obtained further details surrounding "Spartan" from sources close to Microsoft, including reports that it would replace Internet Explorer on both the desktop and mobile versions of Windows 10. Microsoft officially unveiled "Spartan" during a Windows 10-focused keynote on January 21, 2015. "Spartan" will be marketed as a separate product from Internet Explorer, and carry a new brand; although its final name has not been officially unveiled, it was teased that "Microsoft" would be contained within its name.
Microsoft Edge will serve as the default browser on both the PC and mobile device editions of Windows 10, replacing Internet Explorer 11 and Internet Explorer Mobile. Edge uses a new layout engine also known as EdgeHTML, which is forked from Trident that is "designed for interoperability with the modern web". The new "Edge" engine will be used by default across Windows 10, and pages can be rendered in the legacy MSHTML engine for backwards compatibility with enterprise-specific websites and software.
Edge does not support legacy technologies such as ActiveX and Browser Helper Objects, and will instead use an extension system.Internet Explorer 11 will remain available alongside Edge on Windows 10 for compatibility purposes; it will remain nearly identical to the Windows 8.1 version and not use the Edge engine as was previously announced.