The speaker discusses their project P10K, which is an open source video conferencing application. They explain how they were able to scale up to 10,000 participants by using various strategies such as pagination, reducing signaling, and partitioning users into active and passive roles. They also discuss their architecture, use of XMPP, and testing methods. They highlight the importance of their community, the Prosody server, and their team members. The speaker acknowledges that there is still some work to be done, but invites people to follow their progress online and reach out with any questions.