Queueing theory, oftentimes referred to as the science of waiting lines, emerges as an indispensable tool within the realm of operations management. This domain is charged with the analytical dissection of queues, rendering a clear understanding of their formation, progression, and resolution, which is critical for a plethora of service and manufacturing entities. Drawing from intricate mathematical foundations, queue theory offers invaluable insights into optimizing customer or product flow, refining resource allocation, and enhancing overall system efficiency. It is positioned at the “Operations Level” as part of the House of Operations Management framework.