For a young internet company, rapid growth is not a whim—it’s a matter of survival. If in the first months it doesn’t show significant results, investors lose interest and stop funding. While a marketer using traditional methods will research the market and develop a strategy, the company may run out of money, and no one will provide new funding because the company isn’t growing during that time. That’s why startups need growth hackers—people focused on fast results and ready to achieve them by any means. Denis Martyntsev explains the essence of growth hacking, how to grow growth hackers inside your company, and how to build a growth team. Denis provides many case studies, including those of Russian companies, where simple actions that require little effort and cost led to substantial growth in the metrics of digital business—and he advises how to reproduce similar success in your project.