Michael Chik introduces the Lean Startup methodology, which advocates creating small, testable products to validate assumptions with customer feedback before fully developing products. The Lean Startup process involves listing assumptions, understanding customers, and getting a minimum viable product into the world to collect evidence and adjust the product direction as needed. Key concepts include hypotheses, pivoting, problem-solution fit, and product-market fit. Metrics like acquisition, activation, retention, referral, and revenue help determine if the product is solving customer problems.