VSS: VSS stands for Visual Source Safe. It is a configuration mangement tool. It is a virtual library of computer files.
Users can read any of the files in the library at any time, but in order to change them, they must first check the file out. They are then allowed to modify the file and finally check it back in. Only after they check the file in are their changes made available to other users.
Definiton #1: The process of identifying and defining the configuration items in a software system, controlling the release, versioning and change of these items though out the software system life cycle, recording and reporting the status of configuration items and change requests, and verifying the completeness and correctness of configuration items. Definiton #2: The tracking and control of software development. SCM systems typically offer version control and team programming features. SCM is an acronym for software configuration management, and relates to configuration management (CM).
Configuration Mangement Tool: A software product providing automatic support for Change, Configuration or version control.