The talk at the FOSDEM conference in 2023 was about the experience of running a hybrid conference using open source software. The speaker discussed their experience organizing the Linux Plumbers conference, including the challenges they faced in setting up a highly interactive online video system. They also highlighted the importance of training AV staff and the integration challenges of using multiple web services. While they had some difficulties and screw-ups along the way, the conference was ultimately successful and well-received by attendees.