If you want to have the best chance of success on the web then you will need to have a good understanding of ecommerce models. In the past, it was difficult to know where to start. The lack of existing models that were successful meant that people were required to engage in trial and error to establish a workable framework. Now, however, there are many more models that can be replicated to produce a viable strategy. You can even combine elements from each of the models to come up with a hybrid based model.