In this video, Professor Larru explains various business models of peer-to-peer (P2P) lending, building on the previous discussion about P2P lending fundamentals. He covers traditional P2P lending platforms. The video also introduces P2P lending with loan originators and highlights the differences between these models and conventional banking. Professor Larru emphasizes the importance of understanding the business model of a P2P lending platform, as it significantly impacts the risks and returns for both investors and borrowers.