Twenty-five years ago, a Harvard Business School case study featured the exceptional networking practices of Silicon Valley entrepreneur and venture capitalist Heidi Roizen. This was before the rise of online social networks and the ubiquity of social media. But today, Roizen says that those developments have not fundamentally changed how she builds and maintains strong personal and professional relationships. Now a partner at Threshold Ventures and a lecturer at Stanford Graduate School of Business, she shares the biggest missteps that she sees people take. She also explains the impact of AI and remote work on networking, her most effective strategies for building relationships, and her frank advice for those just starting their careers. Roizen is subject of the HBS case study “Heidi Roizen.”