The Elements of User Experience by Jesse James

Successful interaction design requires more than just creating clean code and sharp graphics. You must also fulfill your strategic objectives while meeting the needs of your users (also business needs).

Even the best content and the most sophisticated technology won't help you balance those goals without a cohesive, consistent user experience to support it.

Here are the breakdown:

1st Plane: Strategy - What do we want to solve here? Identified user needs through research. Agreed on the problem that we want to solve.

2nd Plane: Scope, Transform strategies into scope. Define the content elements required in the product in order to meet user needs or to solve the problem.

3rd Plane: Structure - How will the pieces of the elements fit together and behave? (Must define the user flow and user tasks)

4th Plane: Skeleton - Skeleton makes structure concrete. What component will enable people to use the product?

5th Plane: Visual / Surface - Surface brings everything together. What will the finished product look like? (Look-n-feel)

Amazon: https://www.amazon.com/Elements-User-Experience-User-Centered-Design/dp/0321683684