1. Identifying Product-Market Fit:
- Jess Lee, a partner at Sequoia Capital, emphasizes the importance of finding product-market fit for early-stage startups.
- She suggests focusing on understanding the customer's pain points and ensuring the product effectively addresses those needs.
- Lee recommends conducting user research, gathering feedback, and iterating on the product until it resonates with the target market.

2. Metrics for Assessing Product-Market Fit:
- Lee highlights the use of key metrics, such as user growth, engagement, and retention, to gauge the success of a startup's product-market fit.
- She encourages startups to track these metrics closely and use them to make informed decisions about product development and marketing strategies.
- By analyzing these metrics, startups can identify areas for improvement and optimize their offerings to better serve their customers.

3. Founder-Market Fit:
- In addition to product-market fit, Lee emphasizes the importance of "founder-market fit" – the alignment between the founder's skills, experience, and the problem they are trying to solve.
- She suggests that founders should deeply understand the market they are addressing and have a genuine passion for the problem they are trying to solve.
- Lee believes that this founder-market fit can be a key differentiator and increase the chances of a startup's success in the long run.