Stock Keeping Units (SKUs) are barcodes used to identify products and services in an inventory system. They help businesses keep track of their stock, ensure accurate pricing, maximize product availability and streamline ordering processes. Companies use SKUs to keep track of how much stock they have in each store, or across their entire network, as well as how well each item is performing. SKUs can also be used to monitor trends in customer demand and provide insights into the effectiveness of a particular marketing campaign or advertising initiative. So, in short, SKUs are essential technology for modern businesses – helping them make smarter decisions, save time and money and create better customer experiences.