In the fast-paced e-commerce industry, page load speed significantly affects customer satisfaction and conversion rates. A Content Delivery Network (CDN) is a critical tool for improving website performance by caching content on geographically distributed edge servers, reducing latency, and enhancing user experience. CDNs also support global reach, handle traffic spikes during sales or events, offer enhanced security against cyber threats, and boost SEO through improved Core Web Vitals and mobile performance. Best practices include selecting a provider with global coverage and strong security, optimizing caching and using HTTP/2 or HTTP/3, implementing image optimization techniques, and continuously monitoring performance. Real-world success can be seen with companies like Shopify, ASOS, and Etsy, who have boosted conversions, sales, and reliability through CDN implementation.