AACS: Advanced Access Content System
ACE: access control entry
ACL: Access Control List
ACT: Application Compatibility Toolkit
AD: Active Directory
ADO: ActiveX Data Objects
ADO.NET: ADO for .NET
ADPCM: Adaptive Differential Pulse Code Modulation
ADS: Automated Deployment Services
ADSI: Active Directory Service Interfaces
ADT: Access Developer's Toolkit
ADT: Automated Deployment Toolkit
ADUC: Active Directory Users and Computers
AER: Application Error Reporting
AERO: Authentic, Energetic, Reflective, Open
AFD: Ancillary Function Driver
AGPM: Advanced Group Policy Management
AIC: AIX windows Interface Composer
AIK: Automated Installation Kit
AIS: Application Information Service
AIS: Asset Inventory Service
ALPC: Advanced Local Procedure Call
API: Application Programming Interface
APIC: Advanced Programmable Interrupt Controller
APIPA: Automatic private IP address
AppID: Application ID
as: Advanced Server
ASEP: Auto-Start Extensibility Points
ASLR: Address Space Load Randomization
ASR: Automated System Recovery
AVS: Automatic Version Synchronization
AWE: Autocad Windows Extension
AWTAPI: Abstract Windows Toolkit-Application Programmer Interface
BCD: Boot Configuration Data
BCL: Base Class Library
BDC: Backup Domain Controller
BDD: Business Desktop Deployment
BGP: Border Gateway Protocol
BHO: Browser Helper Objects
BITS: Background Intelligent Transfer Service