The origination channel is the method by which a mortgage loan is created, with three main types: Retail, Wholesale, and Correspondent. In Retail, lenders work directly with borrowers, handling all loan processes internally. Wholesale uses mortgage brokers as intermediaries to connect borrowers with lenders, with the broker facilitating loan applications. Correspondent lenders fund loans directly but may delegate application and processing tasks to brokers, retaining ownership until potentially selling the loan in the secondary market. Each channel offers distinct benefits, allowing borrowers to choose the most suitable method based on their needs and preferences.