This means you can run web apps such as Google Docs, the full TechRadar site, your mobile banking site and almost any other page online.
You can choose whether the browser identifies itself as operating from a mobile to retrieve smaller, phone-optimised pages or a desktop browser for the full version of sites, but you rarely have to worry about a page not working unless it's specifically written for Safari or Chrome.
The browser interface has changed slightly to show you more of the page on screen, which means the tabs are now hidden on the swipe-up menu (oddly, the default is for links from apps to reuse the current tab rather than opening in their own new tab).
However, there's now an address bar in landscape mode, which grants a popular Windows Phone 7 request. These are small improvements, though – the big news here is the full HTML5 browser.
If you buy a Windows Phone 7 device, Bing may well be your browser of choice. If your operator has a deal with Yahoo instead, you can thankfully now change the default browser search back to Bing. Unsurprisingly, you can't opt for Google, though.