The technology that underpins the functionality of most e-commerce websites includes transaction processing systems, payment gateways, and content management systems (CMS). Transaction processing systems manage and record sales transactions efficiently, ensuring secure payment processing and order fulfillment. Payment gateways facilitate online payments by encrypting sensitive information, providing a secure bridge between customer and merchant. Finally, CMS platforms allow businesses to manage website content easily, enabling them to update products, images, and descriptions without requiring extensive coding knowledge.