Andrei Vlasov

“One of the cardinal rules of growth hacking is that you must not move into the high-tempo growth experimentation push until you know your product is must-have, why it’s must-have, and to whom it is a must-have: in other words, what is its core value, to which customers, and why.”
― Sean Ellis, Hacking Growth: How Today's Fastest-Growing Companies Drive Breakout Success