WCF - Introduction


WCF - Introduction

  • Windows Communication Foundation (WCF) is a modern technology which is part of web services and was introduced in the year of 2006.
  • It is a framework for creating the service-oriented applications. 
  • A Service Operation can be implemented asynchronously or synchronously without dictating to the client how to call it.
  • WCF enables asynchronous messages transfers between endpoints.
    • A service endpoint can be a service hosted by IIS (Internet Information Services).
    • It can also be a service hosted in an application. 
    • An endpoint can be a client which is shown below.
  • The exchanged messages can be a simple character or a word or  an XML, or  a complex binary stream.


WCF Client and Server Hosts 

WCF Benefits :

  • WCF adds features to existing web services methodology, to develop and deploy the distributed services over the network based on the ethics of Service Oriented Architecture (SOA). 
  • Interoperability forms the base of WCF concept that helps to create and utilize web services as shown above.
  • WCF services are more reliable and secure.


WCF Benefits

  • ASP.NET Web Services exchange SOAP messages over HTTP.
  • But WCF exchange any message format which includes SOAP and REST. 
  • WCF uses various protocols such as HTTP, TCP, MSMQ and named pipes as shown below.


WCF Protocols
  • WCF components includes :
    • WCF service
    • WCF service host
    • WCF service client