The Lean Startup by Eric Ries is a must-read for any business owner or entrepreneur looking to optimize their budgeting strategies. This book introduces the concept of lean startup methodology, which focuses on continuous innovation and experimentation to build successful businesses. Ries provides practical advice on how to test and validate ideas, measure progress, and make data-driven decisions. By adopting lean startup principles, businesses can effectively allocate their resources and budget, ensuring maximum efficiency and profitability.