Platform is a business model that creates value by introducing two independent groups, typically consumers and producers, for a financial transaction. The companies that embrace this model, like Amazon, Airbnb, and Facebook, can rapidly scale their business in ways a traditional business (with pesky store fronts, inventories, etc.) cannot. This is how Airbnb in just 11 years could grow to 150 million users, in over 65,000 cities, offering 1.9 million listings at any given time. When looking for investment ideas, be sure to consider both the pros and the cons of the company in a world that is embracing the Platform like it was 1977.