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Windows Communication Foundation (WCF) depends on several resources that are provided by the operating system to function. The following table lists those resources:
| Resource | Description |
|---|---|
| Microsoft Distributed Transaction Coordinator (MSDTC) | Required to support OleTx transactions. |
| Internet Information Services (IIS) | Required if you want to use IIS to host your application. |
| Windows Process Activation Service (WAS) | Required if you want to use WAS to host your application. |