Customer support is a range of customer services to assist customers in making cost effective and correct use of a product. It includes assistance in planning, installation, training, troubleshooting, maintenance, upgrading, and disposal of a product.

Regarding technology products such as mobile phones, televisions, computers, software products or other electronic or mechanical goods, it is termed technical support

Customer support is considered as one of the main data channels for customer satisfaction research and a way to increase customer retention.