Walmart is a leading global retailer operating a network of over 10,500 stores and various e-commerce websites across 19 countries, serving approximately 255 million customers weekly. The company's core business model is based on everyday low prices (EDLP) and everyday low costs (EDLC), offering a broad assortment of merchandise and services through both physical stores and e-commerce platforms, including grocery, general merchandise, and health and wellness products. Walmart's competitive advantages include its vast scale, global supply chain, and integrated omni-channel capabilities, allowing it to offer competitive pricing and convenient shopping experiences.