Comment by LocalPCGuy

In my experience, where the Front End stops and the Back End starts is always a fuzzy line for non-technical clients (even if that have devs on staff). Especially when you're talking to the marketing department and devs work in IT or another similarly separated department. It pays to have the discussion and get it in writing up front (plus, if you CAN do API work, it may provide additional revenue that you didn't necessarily know was available).