Whose feedback do you need? And when should you rely on it?

Feedback is essential to developing our products and our services. And the feedback of our various stakeholders is very important because we do not have a 360° perspective to account for all the eventualities and facets of our businesses. But who’s feedback is important? And what kind of feedback should we seek? I think the people that we should pay attention to the most, are those who actually use our product or service... and are paying customers. They will have a much better sense of where all the crinkles are, and on what we can do to smoothen the customer experience out.