Zoom (https://zoom.us/) provides video-conferencing software, allowing video-calling from computers / phones etc. The University has now arranged for Zoom licences to be available via the telecoms office: https://help.uis.cam.ac.uk/service/collaboration/university-zoom-account so licences previously organised through the Faculty of Maths were migrated to that during the Summer of2023.
Members of the Maths faculty wanting a Zoom licence should make the request via their departmental TLO (Julia in DPMMS and Vanessa in DAMTP).
Any issues regarding the use of Zoom, eg setting your display name, should be directed at UIS (via phones@uis.cam.ac.uk) rather than Maths IT.