Lean Canvas model, which offers a 360-degree view of your business model and key hypotheses, with the Value Proposition Canvas to ensure a tight fit between product features and customer needs. The Lean Canvas focuses on problem identification, solutions, key metrics, and competitive advantages, while the Value Proposition Canvas deep dives into understanding customer profiles and how your product's benefits address their specific needs and pain points. Together, they provide a holistic strategy for product-market fit and sustainable business model development.