The Architecture-based Technology Evaluation and Capability Tradeoff Methodology has been formulated to aid pre-Milestone A decision-making by enabling users of the method to explore a large, diverse alternative space in a rigorous, quantitative, and traceable manner across the DOTMLPF spectrum. ARCHITECT uses key DoDAF products, a hierarchical modeling and simulation approach, and visual analytics to formulate the problem, identify key gaps and metrics, identify and evaluate a large number of alternatives, and support decision-making. The ARCHITECT methodology has been demonstrated on a simplified SEAD example problem.