If you have a business that uses eBay to ship courier to customers or if you are an eBay customer, then you must know How Does UPS eBay Information Come From? UPS provides an option to small businesses and e-commerce sites to tie up with it to deliver its shipments to their customers. It is profitable for both the businesses and their customers since they get the delivery service at affordable price.
So if eBay ties up with UPS to deliver its packages to its customers, eBay sends its shipments to be sent to their respective customers. Once the shipments are taken over by UPS, then eBay shows the tracking number to the customer so they can track it easily just like a UPS parcel.