Defense & Systems Economics

The Economics of Multi-Domain Warfare

Why Coordination Architecture, Not Platform Superiority, Determines the Cost of Modern Combat

Sinéad O'Sullivan
2025 · BTD Foundations Download PDF

Idea in Brief

The Assumption

Advanced militaries pursue multi-domain operations—the simultaneous coordination of air, land, sea, space, cyber, and electromagnetic capabilities—on the premise that integration across domains produces decisive advantage. A force that can see, strike, and maneuver across all domains simultaneously should overwhelm one that cannot.

The Problem

Multi-domain integration generates coordination costs that scale non-linearly with the number of domains, actors, and interfaces involved. Each additional domain does not simply add capability; it multiplies the coordination burden on the architecture that must synchronize them. Against asymmetric adversaries who exploit the seams between domains rather than competing within them, the cost structure inverts: the integrating force bears the architecture cost, while the disruptive force targets the cheapest interface.

The Implication

The economics of multi-domain warfare are not determined by platform superiority or aggregate spending. They are determined by the ratio between coordination cost and disruption cost. When coordination is expensive and disruption is cheap, the architecture becomes the vulnerability, not the asset.

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