customer relationship
US /ˈkʌstəmər rɪˈleɪʃənˌʃɪp/
UK /ˈkʌstəmər rɪˈleɪʃənˌʃɪp/

1.
the way in which a business interacts with its customers to improve the customer experience and build loyalty
:
•
Good customer relationship management is crucial for business success.
•
The company invests heavily in building strong customer relationships.