cross-sell
verb [ I or T ]
ukus COMMERCE, MARKETING
to sell another further product or service to a customer who is already buying a different product or service:
They can cross-sell to the bank's existing customers and introduce life insurance and pensions products.
cross-selling
noun [ U ]
Cross-selling is a popular tactic among online retailers to increase average order value and items per sale.
Try and maximize any cross-selling opportunities.