AZ-900 Certification Notes

Chapter 5.5 - Content Delivery Network

Content Delivery Network = CND. It is a distributed network of servers that can deliver web content close to users.

Benefits

• Better Performance
  • Improve the user experience and the performance of your application
• Scaling
  • Scale to suit any spikes in traffic, and also protect your main backend server instance from high loads
• Distribution
  • Edge servers will serve requests closest to the user. Less traffic is then sent to the server hosting your application

Terminology

• Cache
  • Collection of temporary copies of original files. The primary purpose is to optimize speed for an application. When a copy expires, a new copy is needed
• Origin Server
  • The original location of the files, such as a web application. It's the master copy of your application