What are barcodes and what are they for? Why are they required by trading platforms such as Amazon and eBay?

Trading platforms utilize barcodes to uniquely recognize products and streamline their logistical operations. These codes, often characterized by a series of 12 or 13 digits, serve as an essential tool for efficient inventory management, ensuring that each item is accurately tracked and processed. Their standardized format aids in the seamless handling of goods across various stages of the supply chain.