Retail keys are sold by Microsoft or authorized retailers. These keys can be used on any computer, but they can only be activated on one machine at a time. Retail keys are often purchased by individuals for personal use.OEM (Original Equipment Manufacturer) keys are pre-installed on computers by manufacturers like Dell, HP, and Lenovo. These keys are tied to the hardware they are sold with and cannot be transferred to another computer.Volume licensing is used by businesses, schools, and organizations. These keys allow for the activation of multiple systems at once and are typically sold in bulk. Volume keys provide flexibility in managing large numbers of computers with a single license agreement.Click here to know more about #windows10prokey