Commodity branding allows companies to differentiate their products and compete on attributes other than just price. It helps build brand preference and long-term competitive advantage. Major challenges include moving customers' focus beyond price and meaningfully differentiating products with constraints on cost. Successful commodity brands invest heavily in branding, promotion, and relevant value additions like quality or innovation to justify premium prices over competitors. Examples that achieved this include Tata Salt through iodization and purity, and Nightingale notebooks through theme-based innovation.