Final answer:
The emergence and utilization of Information Technology (IT) has been one of the most impactful changes in supply chain management.
Step-by-step explanation:
One of the most impactful changes in supply chain management in the last few decades has been the emergence and utilization of Information Technology (IT). With the vast improvement in communications technologies, including the development of the internet, companies can now utilize IT systems to streamline operations, improve efficiency, and enhance communication within the supply chain. These advancements have allowed for real-time tracking and monitoring of inventory, automated processes, and improved collaboration between suppliers, manufacturers, and distributors.