Customer feedback is a type of research that involves collecting and analyzing the opinions, comments, and feedback of customers or users. In UX research, customer feedback can provide valuable insights into the user experience, and it can help designers identify areas for improvement in their products or services.

Customer feedback can be collected through a variety of methods, such as surveys, interviews, focus groups, or online reviews. It can provide information on a wide range of topics, such as user satisfaction, user needs, user preferences, and user behaviors.

Customer feedback can be a valuable source of data for UX research, as it can provide direct insights from users about their experience with a product or service. It can help UX designers understand what users like and dislike about a product, and it can provide valuable input for design decisions.

Customer feedback can also be used to identify common issues or problems that users are experiencing with a product, and it can help designers prioritize which areas to focus on when making improvements. Overall, customer feedback is an important part of UX research, as it can provide valuable insights into the user experience and help designers create better products and services.