Walmart needs to implement an agile strategic plan to address challenges in its supply chain management. The plan should integrate systems thinking with agile methodology. This involves visualizing information on nodes and links, collaborating with stakeholders, rapidly testing solutions, and iterating based on feedback. Integrating systems thinking will help understand relationships between problems and solutions. The agile methodology will then help improve solutions based on immediate testing and feedback. This aligned with Walmart's guiding policy of achieving low-cost sustainable products through optimizing processes and reducing costs.