Bootstrapping is a process of launching and growing a startup using one's own money, such as personal finances or savings. It allows founders to maintain control over their business and vision without external influence from investors. Bubble, a no-code platform, was bootstrapped for seven years before raising outside funding. Bootstrapping has its benefits, including the ability to stay true to one's values and goals, but it also requires careful planning, cost management, and potentially pivoting the business model. Some successful companies that started as bootstrapped startups include Mailchimp and Flexiple.