There’s some debate over the definition of a startup business. Some startups are composed of just one founder, while others are private companies so large that most people don’t even realize that they’re still technically actually startups. Some startups are profitable or “bootstrapped,” while others turn to venture capital firms and angel investors to seek rounds of funding to grow their businesses further. The line between a small business and a startup is also pretty blurry. Many startup founders tend to run “lean” startups, meaning that they limit their expenditures in favor of growing their business faster.