Описание тега channelfactory
WCF ChannelFactory class - used to create and manage Channel-s which are used to send and receive Message-s to WCF service endpoints
Channel-s and the mechanism to create and manage them, the ChannelFactory class is part of the messaging layer in Microsoft's Windows Communication Foundation architecture. The messaging layer connects the activation and hosting layer of WCF with higher level layers such as the service runtime, contracts, and application at the very top. A channel is a component that processes a WCF message in some way, for example, by authenticating a message. A set of channels is also known as a channel stack. Channels operate on messages and message headers. The generic ChannelFactory class is used in advanced scenarios that require the creation of a channel factory that can be used to create more than one channel. (Source: MSDN)