The use of source control management tools is nowadays a standardpractice in the software industry.  Furthermore, it seems that thereis quite a strong consensus (for deliverables) to have an instablebranch where new features arrive and one or several stable brancheswhere only bugfixes are added.  I am interested into the history ofthe emergence and consolidation of these practices.  Can anybodyprovide information about the following milestones?When SCM was used for the first time in an organisation developing software?When was released the first free-software SCM?When was released the first SCM shipped by a software company?When was given the first talk about SCM in a developer's meetingof international importance?Which alternative schemes to the one unstable and one or morestable branches scheme are used today, by a significantly largecommunity (e.g. a large company).(Note that if a project uses topic branches, development happens innumerous branches, but none of them correspond to deliverables.)
When did current source control management emerge?
version control;history;scm
SCCS is one of the oldest ones, dating back to 1972. It has been introduced to early versions of Unix and is now part of the Single Unix Specification. 