If there is no customer for the software that is being built, then there is no one who would be disappointed if it was not built. :). So the most efficient thin

If there is no customer for the software that is being built, then there is no one who would be disappointed if it was not built. :). So the most efficient thing to do is to do nothing. There usually is a customer. It may not be the person who is called the customer, but somewhere there is someone who is spending money on development and is wanting to be able to us or benefit from whatever is being produced. If the customer doesn't have time to collaborate with the devs to provide feedback, it might be a sign that what is being built isn't valuable to them. This could be either because it doesn't address a real need or because the cycle time is so slow it isn't going to help them any time soon. When a dev team is working on the customer's biggest pain point and has a track record of delivering a solution in a few days, customers will magically have time to talk about it.