I run into this Flexible Engine use case which is an interesting video of a Customer use case.
First of all, interesting because Customer shares and emphasizes the reasons to choose the supplier and they focus on performance, security, and support.
Interesting because it is also mentioned the importance that the service has on their own business, presenting the trust in the Company supplying it. The service in use is core for the activity.
A clean and clear example of a Customer recognition and testimonial.