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Difference between WCF and Webservice

Main difference between WCF & Web services:

Features

Web service

WCF

Hosting

It can be hosted in IIS.

It can be hosted in IIS, WAS (Windows Activation Service), Windows Service, Self Hosting.

Programming

[Webservice] attribute has to be added to the class.

[ServiceContract] attribute has to be added to the class.

Model

[WebMethod] attribute represents the method exposed to the client.

[OperationContract] attribute represents the method exposed to the client.

XML

System.XML.Serialization namespace is used for serialization.

System.Runtime.Serialization namespace is used for serialization.

Encoding

XML 1.0, MTOM (Message Transmission Optimization Mechanism), DIME, Custom.

XML 1.0, MTOM, Binary, Custom

Transports

Can be accessed through Http, TCP, and Custom.

Can be accessed through Http, TCP, Named Pipes, MSMQ, P2P, and Custom.

Protocols

Security

Security, Reliable Messaging & Transactions.

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