Customer Feedback are comments made by customers that gives insights about what they think about a brand or product.
Response Rate is what percentage of customers respond to a survey. This will let you know if it is quality research that you are able to use or if the sample size is too small.
Customer Loyalty is how supportive of a brand customers are and how likely they are to stay with one brand vs flip flopping to a competitor.
Customer Journey is the path that a customer takes through a brand. There are typically 5 steps: