title: which is better wcf or dll for a web application which will be used as a part(integrated) of many project?
body: <p>i have a project (Web Application) in c# like shopping cart and i have to build it in such a way it can be integrated in any other project to decrease work load.
  so the functions of it can be used in best,secure and faster.
  So what should i prefer <strong>WCF or DLL's</strong>(Class files.)?</p>
  
  <p>Thanks.</p>