Windows 7 Ultimate was an edition of the Windows operating system produced by Microsoft. It was released as part of the Windows 7 operating system lineup, which was officially launched on October 22, 2009. Windows 7 Ultimate was the most feature-rich edition in the Windows 7 series and included all the features available in other editions, such as Home Premium and Professional, along with additional features.

Some notable features of Windows 7 Ultimate included:

1. BitLocker: BitLocker Drive Encryption allowed users to encrypt their entire hard drive or individual partitions to enhance data security.

2. AppLocker: This feature allowed administrators to restrict the use of certain applications to improve system security.

3. DirectAccess: DirectAccess provided secure remote access to corporate networks without the need for a traditional Virtual Private Network (VPN).

4. BranchCache: This feature improved file access speed for remote branch offices by caching files locally.

5. Multilingual User Interface (MUI): Windows 7 Ultimate supported multiple languages, allowing users to switch between different language interfaces.