CHAPTER 1 IN THIS CHAPTER . Windows Server 2008 R2 Defined . When Is the Right Time to Migrate? . Versions of Windows Server 2008 R2 Windows Server 2008 R2 Technology Primer W indows Server 2008 R2 became available in the summer of 2009. In many ways, it is just the next-genera- tion server operating system update to Windows Server 2008, but in other ways, it is more than just a service pack type update with significant feature enhancements intro- duced in the version release. To the authors of this book, we see the similarities that Windows Server 2008 R2 has in . What's New and What's the Same About Windows Server 2008 R2? . Changes in Active Directory . Windows Server 2008 R2 Benefits for Administration . Improvements in Security in