Upsell
Upselling is a sales technique in which a customer is offered a more expensive version of a product or service they have already chosen in order to increase the purchase value. For example, instead of a basic plan, a customer may be offered an upgraded plan with additional features.
Upselling is used at different stages of customer interaction: during checkout, when choosing a plan, while using a product, or when renewing a subscription. The main goal of upselling is to increase the average order value and revenue from existing customers by offering them a more suitable or feature-rich solution.