Measuring CX is vital, but given the host of measurements out there, it's a complex task. Gartner distinguished analyst shares his thoughts on everything from NPS to customer effort scoring
https://www.cmo.com.au/article/642640/gartner-what-it-takes-measure-customer-experience/
BMW has shifted from cumbersome, multi-question customer feedback forms to a single net promoter score (NPS) in a bid to change the way it interacts with its customers.
http://www.cio.in/feature/how-bmw-shifted-quantitative-qualitative-customer-feedback/