We introduce the conceptual and theoretical foundations of our prescriptive paradigm for robust decisions. Whereas decision-making is an event, executive decision management is a life-cycle of a complex of five spaces. The five spaces are: The Problem Space, Solution Space, Operations Space, Performance Space and the Commitment Space. Consistent with the prescriptive nature of our paradigm, we concentrate on actionable processes and procedures within each of those five spaces. The goal of our prescriptive paradigm is to enable systematic design of robust decisions. The key sociotechnical processes are robust design synthesis, Design of Experiments (DOE) using gedanken experiments, Gage R&R, making uncertainty tractable with spanning set of uncertainty regimes, and the process to represent system behavior phenomenologically.