I have created the diagram below. I hope that people utilize it and modify as they need to. It will help to communicate these complex processes, while at the same time hopefully educate all the business units and team members necessary to create a successful, website, application or even mobile application.
A great User Experience involves a wholistic approach, an all inclusive and symbiotic integration of Interaction Design and Interface Design (Information Architecture, Design & Development). In that same vein, in order to have a great relationship you must have great communication with all parties involved!