请问vendor，agency和supplier 到底有什么区别？ - 知乎 supplier和vendor的定义在APICS里是对比出现的。 supplier有两重含义：1 provider of goods or service 2 Seller with whom the buyer does business, as opposed to vendor, which is a generic term referring to all sellers in the market supplier和vendor的区别就体现在第二重含义里。