Internet Explorer makes use of the accessibility framework provided in Windows.
Internet Explorer is also a user interface for FTP, with operations similar to that of Windows Explorer.
These include the inner HTML property, which provides access to the HTML string within an element; the XMLHttp Request object, which allows the sending of HTTP request and receiving of HTTP response, and may be used to perform AJAX; and the design Mode attribute of the content Document object, which enables rich text editing of HTML documents.
Some of these functionalities were not possible until the introduction of the W3C DOM methods.
Internet Explorer also supports Integrated Windows Authentication. Previous versions had a similar architecture, except that both tabs and the UI were within the same process.
This has resulted in a number of web pages that appear broken in standards-compliant web browsers and has introduced the need for a "quirks mode" to allow for rendering improper elements meant for Internet Explorer in these other browsers.
Internet Explorer has introduced a number of extensions to the DOM that have been adopted by other browsers.
Microsoft Edge, officially unveiled on January 21, 2015, has replaced Internet Explorer as the default browser on Windows 10.
Internet Explorer is still installed in Windows 10 in order to maintain compatibility with older websites and intranet sites that require Active X and other Microsoft legacy web technologies.