Customer Service is to ensure a customer is satisfied with a product or service. Customer service is measured by the relationship the company creates with their customer. It is also measured by how much a company wants to look after their customers. Here are some examples of good and bad customer service, CXO is responsible for good customer service.
A chief experience officer (CXO) is the officer responsible for the overall user experience (UX) of an organization. Chief experience officer ensures the organization has good customer service, so customers are able to have a positive experience.
The reason this role is being ruled out is because companies are beginning to be customer driven and put their customers first, ruling out roles that don't fully concentrate on satisfying customers.
Microsoft
Telecom companies
Banking companies
Hospitality companies
https://en.wikipedia.org/wiki/Chief_experience_officer