For a supply chain focused on reliability as a competitive priority, the most appropriate measure is order fulfillment lead times. This metric directly reflects the ability of the supply chain to reliably meet customer orders within the promised time frame. Key points include:

Reliability Indicator: Order fulfillment lead times indicate the consistency and reliability of the supply chain in delivering products as promised.

Customer Satisfaction: Reliable and predictable lead times are crucial for maintaining high levels of customer satisfaction and trust.

Performance Benchmarking: Measuring and optimizing lead times helps benchmark performance and identify areas for improvement.

Competitive Advantage: Short and consistent lead times can provide a competitive advantage by differentiating the company from competitors who may have longer or more variable lead times.