Windows 7 Enterprise: this is the volume licence version of windows available only through the Microsoft Software Assurance program. It is basically Windows 7 Ultimate minus the premium games (Not really fair as most people at work like to play games), but what can one do? If your company tries to fob you off with this game less version of Ultimate then demand a pay rise (As productivity doesn't come cheap).

DirectAccess in Windows 7 and Windows Server 2008 R2 enhances the productivity of mobile workers by connecting them seamlessly and more securely to their corporate network any time they have Internet access—without the need to VPN. When your IT department enables DirectAccess, the corporate network’s file shares, intranet websites, and line-of-business applications remain accessible wherever you have an Internet connection.

Manage remote machines more effectively. Flexibility gives IT the opportunity to service remote machines on a regular basis and ensure that mobile users stay up to date with company policies. With DirectAccess, IT administrators can manage mobile computers by updating Group Policy settings and distributing software updates any time the mobile computer has Internet connectivity, even if the user is not logged on.

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Enhance security and access control. To keep data safer as it travels public networks, DirectAccess uses IPv6-over-IPsec to encrypt communications transmitted across the Internet. DirectAccess is designed to reduce unnecessary traffic on the corporate network by sending only traffic destined for the corporate network through the DirectAccess server (running Windows Server 2008 R2), or the administrator can choose to send all traffic through the corporate network. In addition to authenticating the computer, DirectAccess can also authenticate the user and supports multifactor authentication, such as a smart card. IT administrators can configure which intranet resources specific users can access using DirectAccess