This document discusses different e-commerce models and factors for success. It compares marketplace and direct models, with marketplaces allowing multiple vendors and direct models involving a dedicated brand portal. Marketplaces provide increased visibility but also fierce competition. The direct model gives full brand control but less scale. It also examines hosted versus self-hosted ecommerce software. Key factors for ecommerce success include web traffic, user-friendly design, reputation, value proposition, and post-sales support. Overall it provides an overview of different ecommerce strategies and considerations.