Technologies used for creating and managing e-commerce sites include content management systems (CMS) like Shopify and Magento, which facilitate product management, payment processing, and inventory control. These platforms often incorporate payment gateways to securely handle transactions, ensuring customer data protection. Responsive design practices are also essential, allowing e-commerce sites to function effectively across devices. Additionally, search engine optimization (SEO) tools and analytics are vital for driving traffic and improving conversions. The integration of effective marketing strategies, such as email campaigns and social media advertising, further enhances online sales potential.