Benefits of WCF over Web services

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about benefits of WCF over Web services. Here they are
1.WCF supports more of WS-* standards than web services
2.As I mentioned in the article WCF supports multiple bindings HTTP,TCP,MSMQ,WS-HTTP etc where as web service supports only HTTP.
3.WCF can maintain transactions like COM+
4.It has JSON integration
5.It can be hosted on IIS,WAS, Self hosting and windows services
6.Web services have no instance management ie you can not have a singleton web service or session full webservice

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