The document discusses the debate around private versus public clouds. Proponents of private clouds argue they can deliver many cloud benefits within organizational constraints, while opponents say private clouds cannot match public clouds' scale and efficiencies. The author believes private clouds are valid if they meet key cloud criteria like self-service and metering. While private clouds have infrastructure limits, they can flexibly scale to meet realistic business unit needs. Fundamentally, cloud is a delivery mechanism and private clouds provide value through agility within compliance requirements.