Key features of a successful tech startup include a strong value proposition, addressing a specific market need. An innovative and scalable business model is critical, allowing for potential growth and profitability. The founding team should possess a diverse skill set, combining technical expertise with business acumen. Effective marketing strategies and a clear understanding of the target audience help in acquiring customers. Additionally, sufficient funding and strategic partnerships can ensure stability. Finally, a focus on agility and the ability to pivot in response to market changes are vital traits for long-term success.