Explore the foundational theories such as Total Quality Management, Lean Management, and Six Sigma, examining their principles and methodologies. Investigate how these theories optimize processes, minimize waste, and improve quality, thereby streamlining operations. Consider the impact of technology integration, supply chain management strategies, and organizational structures on operational effectiveness. Furthermore, analyze case studies or real$-$world examples to illustrate the successful implementation of these theories in diverse industries. Finally, discuss the future trends and challenges in applying operations management theories in a rapidly evolving global landscape.