First-Come, First-Served (FCFS) is a scheduling method used in various systems, such as computer processes and customer service. In this approach, the first request received is the first one to be processed. This means that tasks are handled in the order they arrive, without prioritizing any specific request over another. FCFS is simple and easy to implement, making it a popular choice for many applications. However, it can lead to inefficiencies, especially if a long task delays the processing of shorter ones. This phenomenon is known as the convoy effect, where shorter tasks wait behind longer ones, potentially causing delays.