I need to create a web service using VS 2013, for server to server calls. It appears that there are multiple technologies available. I have previously created (and am using) a web service that I created using asmx type project. That project won't even open in VS2013. I tried to create a newer WCF web service, but I am missing some pieces needed to support it. When I run the service I created, it refers to svcutil.exe to create a client side class to call the service. I don't have this on my system, and am unsure what I need to install to get it. I think this would be a solution if I can figure out how to get this tool.
If I move forward with this, it this the most current technology? Also, Is there an add-in that would allow me to open my old web service in VS 2013?