FinOps unit economics is a framework for attributing cloud costs to internal teams and customers, increasing understanding of shared cost and profit margins. Rate cards are established to define fixed pricing models for services rendered by various teams. Setting rate cards helps in strategic planning and prioritizing efficiency improvements. Influencing behavior with rate cards can drive adoption of best practices and focus on efficiency. Including reserved capacity in rate cards encourages addressing inefficiency and technology debt, aligning operational goals with financial strategies. Overall, unit economics and rate cards ensure that engineering efforts align with strategic business objectives and drive sustainable growth.