SVN is a Version Control Service (also known as Revision control) providing the means to manage changes to source code, and other information stored as computer files.
SVN is the older, centralised version control service at CERN. SVN repositories are hosted on a cluster with the data in AFS. There is also a Git service for those who wish to work with a modern, distributed VCS.
For all new projects we recommend Gitlab, while SVN is still maintained for current users. We recommend all our users to plan for a migration from SVN to GitLab.
This is the CERN Central SVN service run by the IT Department.