CDN plays a crucial role by absorbing the attack traffic, distributing it across multiple servers, and preventing the origin server from being overwhelmed. CDNs also offer features like caching and load balancing, further enhancing website performance and resilience.

A CDN (Content Delivery Network) acts as a buffer between the attacker and the origin server. It distributes website content across a network of servers globally, so even if one server is flooded with attack traffic, the others can continue to serve legitimate users. This significantly reduces the impact of a DDoS attack.