Informal customer feedback is a qualitative research technique that helps the business understand how their customers feel about their product or service.

It can be obtained by asking customers for their opinions, either in person or through surveys. It is also possible to get customer feedback by observing them as they use the product or service, and then asking them for their opinion afterwards.

Informal customer feedback is the most important type of feedback that a company gets. It is the most direct way to get information about what customers are thinking and feeling, This is the most valuable type of feedback because it's the most genuine and honest, since there's no filter or editing involved. It can be very insightful, but it can also be biased and unfair, so you need to take it with a grain of salt.

Informal customer feedback is a crucial part of the customer experience process as it provides a window into what customers are thinking and feeling about your brand.

Informal customer feedback is not formal and it does not have to be done through an official channel or process. It can also be done through word-of-mouth recommendations from one customer to another.