1. Strategic Management: It guides the development of long-term strategies and the alignment of organizational resources to achieve competitive advantage. 2. Marketing: Theories related to consumer behavior, segmentation, and positioning help in crafting effective marketing campaigns. 3. Operations Management: Concepts like lean manufacturing and supply chain management improve efficiency and productivity. 4. Financial Management: Financial theories assist in investment analysis, risk management, and capital budgeting. 5. Human Resource Management: Theories on motivation, leadership, and organizational behavior inform HR practices and policies.