Hot answers tagged development
No, you should not have to activate any service or anything. I saw one of your other questions from earlier, and it seems you were instructed to use copy.asmx and you yourself had found lists.asmx. However, you have tagged this question with 2013, and if that is the case, I would highly recommend not using lists.asmx etc. and instead use the REST API. ...
Since it is your custom WCF service. Couple of options In case of on premise deploy the WCF service into SharePoint Context (ISAPI) In case of office 365 you can create SAML request for authentication. You should get the credentials from the user and pass it for authentication.
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