Worked at microsoft for 2 years, there are the same policies. It was not contractual though. It's just that there were notes broadcasted saying that whenever you discussed with third parties, you should use microsoft tools if possible. Want to meet someone? Send a Bing Maps link, not Google Maps. Want to share a research? Send a Bing Link, not a Google search. etc.
As for the confidentiality clauses, I work in finance, and the rules on IP and personal projects are the same as what you describe.