而且，绝大多数的采购是自助式的，没有IT的参与，是开发者而非苹果公司开发应用。

Moreover, the vast major-ity of purchases occur through self-services and without it intervention, and developers contribute new apps rather than Apple building them.

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假设您有一个采购订单应用程序。

Imagine that you have a purchase order application.

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集成现有的应用程序以通过网关提交和接收目录以及采购订单。

Integrate existing applications to submit and receive catalogs and purchase orders via the gateway.

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