CDNs manage high traffic loads by using a global server network to cache and deliver content closer to users, reducing latency and origin server strain. They handle traffic through caching static content, load balancing, DDoS mitigation, and optimization techniques like compression and image formatting. Benefits include improved performance, scalability during surges, reduced bandwidth costs, and low-latency global access. Major e-commerce and streaming platforms rely on CDNs for stability during peak times. Selecting a CDN should consider coverage, performance, security, and cost. Future trends include edge computing, serverless functions, and AI-driven caching. CDNs are essential for businesses facing traffic spikes to ensure reliability and user experience.