Tech startups differ from established companies in their approach primarily due to their agility and focus on innovation. Startups are often characterized by flatter organizational structures, which facilitate quick decision-making and rapid adaptation to market changes. They prioritize disruptive technologies and seek to challenge traditional business models. Additionally, tech startups typically embrace a growth mindset, investing heavily in research and development. In contrast, established companies may focus more on optimizing existing processes and maintaining stability, which can hinder their ability to pivot quickly in response to new opportunities.