Product-led growth (PLG) and self-serve models are not interchangeable, as successful PLG companies often employ multiple go-to-market strategies beyond self-serve to accommodate complex customer needs and business strategies. Growth advisor Elena Verna and MadKudu co-founder Francis Brero highlight the necessity of diverse monetization funnels to cater to different customer segments, especially when moving upmarket. They illustrate how a reliance on a single funnel can hinder growth, particularly when expanding into enterprise markets where buying decisions involve multiple stakeholders, compliance, and security considerations. PLG companies are encouraged to implement a combination of self-serve, sales-assisted, bottom-up, and top-down sales funnels to address varying customer needs, ensuring both the product and sales teams work in tandem. This approach requires clearly defined market segmentation and a robust lead qualification system to prevent internal conflicts and optimize the sales process, ultimately leading to sustainable growth and better customer experiences.