After-sales support refers to the assistance and services provided to customers after they have purchased a product or service. This can include technical support, troubleshooting, warranty claims, and any other form of support needed to ensure customer satisfaction and retention. It is a crucial aspect of customer service that aims to build a long-term relationship with customers by addressing their needs and concerns even after the initial sale has been made. Effective after-sales support can greatly enhance the overall customer experience and foster loyalty towards a brand.