Alexander Osterwalder is a Swiss business theorist, entrepreneur, and author best known for his work on business model innovation. He co-created the Business Model Canvas, a strategic management tool that helps organizations visualize, design, and innovate their business models. This framework has gained widespread popularity among startups and established companies alike. Osterwalder's contributions extend beyond the canvas; he has also authored several books, including Value Proposition Design, which focuses on creating compelling value propositions for customers. His work emphasizes the importance of understanding customer needs and aligning business strategies to meet those needs effectively.