Discuss the concept of organizational structure and its critical role in shaping the efficiency, functionality, and adaptability of an organization. Explain the various types of organizational structures, such as functional, divisional, matrix, and hybrid structures, highlighting their characteristics, advantages, and limitations. Analyze how organizational structure influences communication patterns, decision-making processes, and employee collaboration within an organization. Furthermore, explore the impact of technological advancements and globalization on evolving organizational structures. Provide real-world examples of organizations adopting different structures and evaluate the effectiveness of their chosen structures in achieving strategic objectives. Additionally, discuss the challenges that organizations might encounter in restructuring or modifying their existing organizational structures and propose strategies to address these challenges.