Hello friends! As you know, UPS has got an efficient tracking system so we are going to share How Does UPS eBay Information Come From? To provide a cost-effective and wide network of delivery services to its customers, UPS gives the options to small businesses and e-commerce companies to tie-up with it. Many businesses and e-commerce companies choose UPS as their courier service since it provides cheap and fast delivery along with tracking facility.
So to answer your question, eBay can get the tracking information from UPS if it ties up with it as its courier service partner. So then the courier is first packed it is shipped to the nearest UPS hub. Then UPS takes over and delivers the courier to its final destination, i.e., to its recipient.
Then UPS provides eBay with the tracking information and it displays the UPS tracking information to its customers. So they can track their shipments easily and get a detailed summary of their packages.