The simulation is a process where the real world situation has been predicted using the mathematical process. The method of simulation has been used in the various business and operations sector (Render, 2018). The following four cases indicate why simulation is a needed process in decision making: (a) inventory ordering policy? The simulation provides the cost optimization of the resources. It gives a direction about future goals. It identifies the flaws if any in the current operations by comparing the simulation data with the operational data (SalahUddin, Nipa & Rume, 2015).