CDNs (Content Delivery Networks) are a network of servers distributed across the globe that work together to deliver content to users in the most efficient and effective way possible. CDNs are used to improve website performance, reduce latency, and increase reliability by caching content closer to the end-user. This means that when a user requests content from a website, the CDN will deliver it from the server closest to the user, reducing the time it takes for the content to load. CDNs are commonly used for delivering static content such as images, videos, and other media files.
CDNs work by caching content on multiple servers located in different geographic locations. When a user requests content from a website, the CDN will determine the server closest to the user and deliver the content from that server. This reduces the distance the content has to travel, which in turn reduces latency and improves website performance.
CDNs also help to reduce the load on the origin server by distributing the traffic across multiple servers. This helps to prevent the origin server from becoming overloaded and crashing during periods of high traffic.
CDNs can also provide additional security features such as DDoS protection, SSL encryption, and web application firewalls. These features help to protect websites from cyber attacks and ensure that user data is kept secure.
Overall, CDNs are an essential tool for improving website performance, reducing latency, and increasing reliability. They are used by many of the world’s largest websites and are an important part of the modern internet infrastructure.