Externalities:Externalities are the unintended consequences, either positive or negative, that an economic activity has on third parties not directly involved in the activity.
Network Effects:Network effects occur when the value of a product or service increases as more people use it, creating a self-reinforcing cycle of adoption.
Agglomeration Economies: Agglomeration economies are the benefits that businesses obtain by locating near one another, such as access to a larger labor pool, shared infrastructure, and knowledge spillovers.