The number of field test points for proof-of-performance tests is determined by what factor?

The determination of the number of field test points for proof-of-performance tests is primarily influenced by the number of customers. This is because proof-of-performance tests are designed to assess the effectiveness and reliability of a service from the perspective of the end users. The more customers there are, the more test points are generally needed to ensure a representative sample of the customer base. This helps in identifying any potential performance issues across different segments of users and ensures that the service meets the expected standards for all customers.

In contrast, the geographic area of service may influence logistics and accessibility for testing but does not directly correlate with the number of test points needed. The availability of field testers is also less relevant in determining the number of test points, as it depends more on operational capacity than on customer representation. Lastly, while the type of service provided can affect testing protocols, it does not dictate the quantity of customer-based test points necessary for comprehensive evaluation.