Concept design

The concept of "concept design" in the sense I have adopted can also be interpreted as a "concept-oriented design."

The development of a concept design is a conceptual development of a functional and aesthetic ideology for solving a task.
I assume that before deciding on the technical development of a specific solution, at least two alternative conceptual options should be considered.

This is exactly what I am implementing: from two to four options with the ability for the Customer to choose the final one.