customer base
US /ˈkʌs.tə.mər ˌbeɪs/
UK /ˈkʌs.tə.mər ˌbeɪs/

1.
base de clientes, clientela
the group of people who regularly buy from a particular shop or business
:
•
The company is trying to expand its customer base.
A empresa está tentando expandir sua base de clientes.
•
A loyal customer base is essential for long-term success.
Uma base de clientes leal é essencial para o sucesso a longo prazo.