Active Directory Components in Windows Server 2008
The range of Active Directory (AD) has expanded in Windows Server 2008 and has become an essential part of many information technology (IT) environments. Active Directory has become an umbrella for a multitude of technologies surpassing what AD was in Windows Server 2000 and 2003. Check out the new uses for Active Directory:
Active Directory Domain Services: An X.500-based directory service that provides integrated authentication and authorization services for a Windows computing environment.
Active Directory Lightweight Directory Services: A stripped down version of Active Directory Domain Services that focuses on providing just the directory services functionality.
Active Directory Federation Services: A Web Services–based technology for providing Web single sign-on authentication services between different organizations.
Active Directory Certificate Services: Provides digital certification enrollment and revocation services in the support of a public key infrastructure (PKI).
Active Directory Rights Management Services: Provides a solution for managing how users can use documents that they're authorized to access.

Cloud Computing Glossary
cloud computing
A networking solution in which everything — from computing power to computing infrastructure, applications, business processes to personal collaboration — is delivered as a service wherever and whenever you need.

Cloud Computing Glossary
cloud service
The delivery of software, infrastructure, or storage that has been packaged so it can be automated and delivered to customers in a consistent and repeatable manner.

Cloud Computing Glossary
deprovision
The release of cloud services that are no longer needed.

Cloud Computing Glossary
federating
Linking distributed resources together over the cloud.

Cloud Computing Glossary
hypervisor
An operating system that acts as a traffic cop, managing the various virtualization tasks in the cloud to ensure that they make things happen in an orderly manner.

Cloud Computing Glossary
multi-tenancy
The sharing of underlying resources by multiple companies over a cloud.

Cloud Computing Glossary
network attached store
Storage that has its own network address through which it is accessed by the network's workstation users. Acronym: NAS

Cloud Computing Glossary
service level agreement
A contract that stipulates the type of service you need from providers and what type of penalties would result from an unexpected business interruption. Acronym: SLA

Cloud Computing Glossary
solution stack
An integrated set of software that provides everything a developer needs to build an application.

Cloud Computing Glossary
storage area network
A storage systems that is flexible and scalable because it's available to multiple hosts at the same time. Acronym: SAN

Cloud Computing Glossary
vertical industry groups
Workgroups comprised of members from a particular industry such as technology and retail.

Cloud Computing Glossary
virtual memory
The portion of your hard drive that Windows uses to expand the available RAM

Cloud Computing Glossary
virtualization
Using computer resources to imitate other computer resources or whole computers to maximize performance and flexibility.