Resource management (queueing theory) is the application of mathematical models and analytical techniques derived from queueing theory to analyze, evaluate, and optimize the allocation, scheduling, and utilization of finite resources within systems characterized by stochastic arrivals of requests and limited service capacity. It specifically investigates system performance metrics such as waiting times, queue lengths, resource utilization, and throughput under various service disciplines and arrival patterns. This concept is fundamental in fields such as networking, telecommunications, computing, manufacturing, and service operations, providing a framework for designing and managing systems like distributed systems, wireless communications networks, and sustainable manufacturing processes to achieve desired levels of efficiency, responsiveness, and reliability.