What are the four main types of business models?

Can you elaborate on the four primary business models that exist? I'm particularly interested in understanding the unique features and advantages of each model. For instance, what sets the transactional model apart from the subscription model? How does the platform model differ from the affiliate model in terms of revenue generation and customer engagement? Additionally, are there any industry-specific considerations or trends that are driving the adoption of certain business models over others? Your insights would be invaluable in helping me grasp the nuances of these diverse approaches.