UPS stands for United Parcel Service and is an international shipping-company. Questions tagged with UPS usually refer to the UPS Developer Kit. The UPS Developer Kit is used to integrate UPS functionality directly into business systems and e-commerce websites using 11 different APIs.
The UPS Developer Kit is used to integrate UPS functionality directly into business systems and e-commerce websites using 11 different APIs. Two types of APIs exist, both using xml. The first type uses straight xml, while the other uses soap and wsdl.