Rainer Nitsche spoke at the Mannheim Competition Policy Forum on 24 October 2018. He talked about intra-platform competition on hybrid e-commerce platforms like Amazon. The Forum aims at providing a platform for the discussion of recent cases, general competition policy issues, and relevant academic research in the field. Renowned practitioners and academics are invited to present their views on cases and general policy questions. The presentation is followed by a discussion of the economic implications with the audience.