keyclient

noun
UK /ˈkiːˌklaɪənt/
US /ˈkiˌklaɪənt/

A key client is a very important customer that a company wants to keep happy.

The sales team meets with their key client every month to make sure everything is going well.


OTHER MEANINGS

2. In business strategy, a key client is an account that brings in a large share of a company's revenue.

Losing that key client would hurt the company's yearly income.

3. In project management, a key client is the main person who approves the work and gives feedback.

The key client signed off on the new design yesterday.

4. In sales, a key client is a customer handled by a senior team member because of their importance.

She was promoted to manage the firm's key client in Europe.