- Startups are focused on searching for a scalable and repeatable business model through continuous customer validation and pivoting if needed. In contrast, large companies execute established business models through planning and accounting. - Traditional processes like marketing, sales, engineering are inappropriate for startups still searching for a model. Startups require agile development and customer development focused on hypothesis testing. - Once a startup finds product/market fit and a repeatable sales process, it transitions to a large company focused on growth, processes, and management over leadership. Accounting takes priority over metrics like in large companies versus the search focus of startups.