Explanation:

Customer satisfaction refers to how well you, as a product or service provider, fulfil the needs and expectations of your customers. This applies to any interactions before and after the sale as well as during it.
The fact that the above definition uses the word “measure” highlights the importance of measuring customer satisfaction empirically. This is typically done using customer satisfaction surveys to gather your customers’ opinions on the different aspects of your service. You can also factor in other metrics like customer retention and loyalty to make assumptions about customer satisfaction.

By measuring customer satisfaction in this way, you can identify your weaknesses and figure out how to improve your service in order to increase customer satisfaction levels.