ASMX defines web services called by an Active Server Page (.ASP file)
SVC, or .svc, is a computer file extension utilized by Microsoft’s Windows Communication Foundation to symbolize a service hosted by Internet Information Services. The Windows Communication Foundation, or WCF, is an application-programming interface (API) in the .NET framework for constructing linked, service-oriented applications.
.svc can replace .asmx in all
.asmx is easier to configure than .svc, because .svc adds so many configuration keys with diverse options that might not be entirely useful.
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