For a tree-diagram of groups, sections and their members, see https://organigram.cern.ch/it (accessible from CERN onsite/tunnelling only).  The granularity can be adjusted down to section level by modifying the URL suffix - eg /IT-DI instead of /IT.

The 2026 IT Dept structure and groups can be consulted in the IT Dept 2026 Structure document (CERN SSO required).