For what it's worth, this presentation was produced by a Microsoft MVP (Most Valued Partner), not by someone at Microsoft.
However, as per his LinkedIn, he does work for Microsoft today:
Windows Phone Evangelist, Microsoft, Public Company; 10,001+ employees; MSFT; Computer Software industry [February 2012 – Present (4 months)] Philippines
(there used to be a Most Valuable Partner program in the middle of the nineties I believe, this program basically started on Compuserve forums and there was a time where the two programs' names overlapped)