CDN (Content Delivery Network)

A Content Delivery Network is a distributed server network to deliver web content, such as images, videos, scripts, and other static assets, to users more efficiently. CDNs work by caching and storing copies of these assets on multiple servers close to the end-users. When a user requests a resource, the CDN delivers it from the server nearest to them, reducing latency and improving load times. This not only speeds up content delivery but also helps distribute the traffic load, which can mitigate the risk of server overloads and improve overall website performance. Popular CDN providers include Akamai, Cloudflare, and Amazon CloudFront.

WAF (Web Application Firewall)

A Web Application Firewall is a security system that protects web applications from various online threats and attacks. WAFs monitor and filter incoming web traffic to detect and block malicious requests and standard attack patterns, such as SQL injection, cross-site scripting (XSS), and cross-site request forgery (CSRF). They help safeguard web applications and data from unauthorized access, breaches, and other forms of cyberattacks.