Though Windows Phone 7 is primarily aimed at consumers during the initial launch, Microsoft already has a strong focus on enterprise built within the the OS (Office, Sharepoint, Skydrive, remote management, etc.). This enterprise focus will no doubt become even more robust during further revisions to the OS, hopefully giving Microsoft that edge once again over RIM.
One area that is of interest would be security and encryption. Turns out WP7 supports quite a few forms of data protection algorithms, including the following:
This doesn't mean that encryption is directly supported out-of-the-box for end users, but it does mean that developers have a wide assortment of tools to handle data encryption when writing their own software for the platform. Rob Tiffiany demonstrates this by writing an app to encode some simple data on the fly. His impression is that WP7 has a very solid base for security, which to bring it around again, is not only is good for business but for corporate environments.