A CDN distributes web content via global edge servers to enhance website speed, scalability, and security. By caching static assets and routing user requests to the nearest server, CDNs reduce latency and bandwidth usage. Key benefits include faster load times, DDoS protection, SEO improvement, and reduced server costs. Selecting the right provider depends on coverage, performance, and security needs, with popular options like Cloudflare and Akamai. Implementation involves DNS configuration, caching rules, and performance monitoring. Best practices include optimizing cache policies, enabling HTTP/2, and avoiding common pitfalls like stale content and SSL errors. CDNs are essential for sites with global reach or traffic spikes, and offer value for businesses of all sizes.

Content Delivery Networks (CDNs) enhance website performance, reduce latency, and improve security by using globally distributed servers. Factors to consider when choosing a CDN provider include performance, security features, pricing structure, ease of integration, customer support, and scalability. Popular CDN providers each have unique advantages, such as Cloudflare for strong security and affordable options, Akamai for enterprise-grade performance, Amazon CloudFront for AWS integration, Fastly for real-time caching, and BunnyCDN for simplicity. Testing a CDN through performance benchmarking, trial periods, and support evaluation is recommended before any long-term commitment to ensure it meets your business needs.