The speaker, Alfred Neumeyer, gives a talk at the FOSDEM conference about Ubuntu Touch and the concept of convergence. He explains that convergence refers to the ability of a system to adapt to different usage scenarios, such as phone, tablet, laptop, or TV, while running the same shell and providing a similar user experience. He discusses the history of Ubuntu Touch, the components involved in achieving convergence, and the challenges of migrating to new technologies like systemd, Mir, and Wayland. He also highlights the Lumiri UI toolkit and its role in creating a consistent user interface across different devices. The speaker briefly mentions the off-screen keyboard framework used in Ubuntu Touch and concludes the talk with a demo of the system's capabilities.