System Service Dispatch Table, an internal data structure within Microsoft Windows
BBC World Service | National Park Service | Internal Revenue Service | operating system | Distinguished Service Order | Super Nintendo Entertainment System | Nintendo Entertainment System | Special Air Service | United Parcel Service | Meritorious Service Medal (United States) | United States Postal Service | National Health Service | Android (operating system) | Meritorious Service Medal | Metropolitan Police Service | United States Forest Service | Global Positioning System | German Academic Exchange Service | Secret Intelligence Service | Solar System | X Window System | Immigration and Naturalization Service | Distinguished Service Cross | National Defense Service Medal | National Service | United States Secret Service | Royal Naval Air Service | National Weather Service | Agricultural Research Service | Special Broadcasting Service |