What is a CDN and its purpose?
A Content Delivery Network (CDN) is a distributed network of servers that deliver web content to users based on their geographical location. The primary purpose of a CDN is to enhance website performance and reduce latency by caching content at various locations (nodes) around the world. When a user requests content, the CDN serves it from the nearest server, minimizing load times and improving user experience. Additionally, CDNs improve reliability and scalability by handling increased traffic during peak times and providing redundancy in case of server failures.