B2B electronic commerce involves transactions conducted electronically between businesses over the internet. It provides benefits for both buyers and suppliers such as reduced costs, increased market efficiency, and access to new customers and markets. There are different models for B2B e-commerce including online catalogs, exchanges, auctions, and intermediary-oriented marketplaces. Effective B2B strategies consider factors such as price determination methods, revenue sources, costs, control structures, and value-added offerings.