クライアント

くらいあんと
noun
client
1. client (business)
A customer or person who receives professional services.
Have a meeting with the client.
We acquired a new client.
I changed the design to match the client's requests.
2. client (computing)
A computer or software that requests services from a server.
Connect from the client to the server.
Please update the client-side application.
I configured the email client so I could receive internal emails.

From English "client." Used in business to mean a customer receiving services, and in IT for computers/software requesting data from servers.

BUSINESS EXPRESSIONS:

IT EXPRESSIONS:

CONTRAST:

クライアント implies an ongoing professional relationship, while 顧客(こきゃく) is broader.