A sup­pli­er rela­tion­ship is a trans­ac­tion­al busi­ness rela­tion­ship in which one busi­ness (the sup­pli­er) pro­vides goods or ser­vices to anoth­er busi­ness (the cus­tomer). Sup­pli­er rela­tion­ships can be long-term or short-term, and they may involve infra­struc­ture, fea­tures, fin­ished prod­ucts, or services.