Scalability is defined as “the capability of a system, network, or process to handle a growing amount of work, or its potential to be enlarged in order to accommodate that growth.” (Thanks, Wikipedia!) Conversations about scalability are commonplace in the venture-backed startup scene, and for good reason. Scalability is a prerequisite for rapid growth. With digital products and social networks, the marginal cost of selling another product or adding another user is practically zero (ignoring, for this moment, the downstream need for salespeople, marketers, customer service reps and other personnel). Code-driven business models create the possibility to build a billion-dollar company with only thirteen people.