When Microsoft first introduced Internet Explorer 9 at PDC in November 2009, it didn't show much. A few benchmarks, some talk about the technologies that the browser would use, and a little information about the direction that development would take. But it was a significant event nonetheless. After years of playing catch-up—the stopgap Internet Explorer 7 added tab support, and then the solid Internet Explorer 8, which offered little in the way of support for new Web innovations—Microsoft was starting to position its browser not only as good, but able to take on the competition and be best in class.
And with the release today of Internet Explorer 9, the company has gone on to deliver just that—IE9 is the most modern browser there is.