You can point custom domain names to your Windows Azure websites. Windows Azure must verify that you are authorized to configure ...

You can point custom domain names to your Windows Azure websites. Windows Azure must verify that you are authorized to configure the custom domain name to point to your Windows Azure website. To verify authorization, create a CNAME resource record with your DNS provider that points from either __www.yourdomain.com__ to __''{0}''{1}__, or from __awverify.www.yourdomain.com__ to __awverify.''{0}''{1}__.
When using Traffic Manager, create a CNAME resource record with your DNS provider that points to the *.trafficmanager.net URL.