Startup mentorship is a supportive relationship where experienced entrepreneurs, known as mentors, guide new business founders. Mentors share their knowledge, skills, and insights to help startups navigate challenges, make informed decisions, and grow effectively. This mentorship often includes advice on business strategies, networking opportunities, and feedback on product development. By leveraging the mentor's experience, startups can avoid common pitfalls and accelerate their journey toward success, ultimately increasing their chances of sustainability and profitability in a competitive market.