Deploying a static site to a CDN

When talking about a CDN (short for content delivery network), we refer to a geographically distributed network of data centers used to achieve high availability and performance when serving content to users in any part of the world.

To keep it simple, let's give an example. I currently live near Milan, Italy, and I want my web application to be used in potentially any part of the world. So, where should I host it from a geographical point of view?

Certain providers, such as Amazon AWS, DigitalOcean, and Microsoft Azure (and many more), will let you choose a specific data center to serve your application from. For example, I could select AWS eu-south-1 (Milan, Italy), ap-northeast-2 (Seoul, South Korea), or sa-east-1 (São Paulo, Brazil). If I choose to serve my web application from Milan, Italian users will notice a very low latency when trying to reach the web application; it is geographically located very close to them. The same could...