Tech startups approach product-market fit by continuously testing and validating their product ideas against market demand. Initially, they conduct market research to identify customer needs and pain points. Startups then create minimum viable products (MVPs) to gather user feedback and iterate on their offerings. Rapid adjustments based on customer experiences allow startups to refine their products to better meet market requirements. Effective strategies include utilizing analytics to track user behaviors and engagement levels, ensuring that the final product resonates with the intended audience and drives sustainable growth.