This is stage one after understanding what the project is.... mobile, web,Digital dashboard, TV iWatch? Then lots of brainstorming and creating use case scenarios to define project scope and audience. Once as many aspects of the projects are roughly defined then I go to work in a low-fi wireframe. From this point it's all about iteration and refining. Once this is flushed out and agreed upon then the project moves on to Hi-fi design and prototyping.

IA chart wireframe for Microsoft mobile