In the editions of Windows Vista

Windows Vista is the name of the newest version of Microsoft Windows, graphics-based operating system from Microsoft that is used on personal computers (PCs), both for home users and businesses, on a laptop computer, or media center.

Windows Vista Editions:

1. Windows Vista Starter
Much like Windows XP Starter Edition, this edition is still 32-bit technology, this edition is limited to local areas, especially as an alternative to the use of legal rather than pirated copies.
Users of this edition will be very limited use, for example, can only be to use three programs at once in a while, barring a network connection, and physical memory is limited to 256MB.

2. Windows Vista Home Basic
Like Windows XP Home Edition, with 64-bit technology, its features also increase.
But not as much as the other edition, Home Basic is intended for home users who do not require a higher facility.
The theme "Aero Glass" with transparency effects also will not be included in this edition.
Home Basic will support up to 8GB of physical memory.

3. Windows Vista Home Premium
Based on Windows Vista Home Basic, this edition features additional support for higher segment devoted to home users, such as HDTV support and DVD menu creation.
Another addition is more games, support for tablet computers and mobile devices, file encryption system, as well as a photo management application.
This edition is similar to Windows XP Media Center Edition and Tablet PC Edition.
Home Premium supports up to 16GB of physical memory.

4. Windows Vista Busines
Comparable to Windows XP Professional, and intended for business users.
Media Center features of Home Premium is not included in this edition, but has facilities IIS web server, fax support, offline files, support for dual physical processor, Remote Desktop, collaboration, P2P, and able to handle up to 128GB of memory.
Product activation is not required for this edition.

5. Windows Vista Enterprise
This edition is intended for the enterprise segment, and is a high-level edition of the Business edition.
Additional features include single-session version of Virtual PC, a multilingual interface support, BitLocker Drive Encryption, and support for UNIX applications.
This edition will not be available through retail or OEM channels, but through Microsoft Software Assurance.

6. Windows Vista Ultimate
This edition combines all the features Home, Premium, and Enterprise.
In this edition also added support for making a podcast (which is translated by Microsoft to "blogcasting"), program-enhancing gaming performance (WinSAT), DVD ripping facilities, and special online services for downloadable media, as well as additional customer service options.
Ultimate edition is intended as the most impressive edition of Vista, aimed at high-end users, gamers, multimedia professionals, as well as PC addicts.
As Business and Enterprise editions, product activation is also not required.

Source: http://id.wikipedia.org