title: Calling an HTTP triggered Azure function from another one
body: <p>I have a VisualStudio solution with 3 Azure Functions: Functions A, B and C. All them are HTTP triggered. Now, I need to create a new function D (a durable function?) to chain functions A, B and C. Depending on the parameters reveived in function D, it has to execute A-B-C, or maybe A-C, or maybe some other combination. But I still need to call A, B and C independently as they are called now that function D doesn't exist. So, what I need to know is:</p>
  <ol>
  <li>Creating a durable function D is the best solution to do what I need to do?</li>
  <li>If so, how do I call functions A, B and C from function D?</li>
  </ol>
  <p>Thanks</p>