Commercial-Off-the-Shelf (COTS) software refers to ready-made software products that are commercially available for purchase and can be used without any major modifications or customization. These software solutions are developed, marketed, and sold by third-party vendors, making them easily accessible for businesses of all sizes.The term "off-the-shelf" implies that the software is readily available and can be used as soon as it is purchased, without any additional development or configuration. Before moving further, let us just first explore the Commercial-Off-the-Shelf software (COTS) meaning.