Using a single base platform for multiple roles can dramatically reduce lifecycle costs, including maintenance, pilot and technician training, spare parts, flight simulators, and supply chains. This approach is far cheaper than maintaining entirely separate fleets. However, when budgets allow, many militaries prioritize high efficiency and specialized optimization, designing each role with a platform engineered for that specific mission—such as the KC‑46 tanker or the E‑7 AWACS. This method offers higher operational performance but incurs greater initial and logistical costs. Both approaches are logical and defensible, each with its own trade‑offs; with unlimited budgets, most countries would favor specialization.