A web application is hosted in AWS EC2 and serves global customers. As the application is getting more and more popular, the data transfer cost keeps increasing. You plan to use AWS CloudFront to improve the latency and reduce the cost. Which of the following services is free for CloudFront?

Answer options:

A.Data transfer out to the Internet from edge locations.
B.Data transfer out of Amazon CloudFront to the origin server.
C.Data transfer from origin to CloudFront edge locations (Amazon CloudFront "origin fetches").
D.Custom SSL certificate associated with the CloudFront distribution using the Dedicated IP version of custom SSL certificate support.

Correct Answer – C
CloudFront is a content delivery network (CDN) service that offers a simple, pay-as-you-go pricing model. For the Amazon CloudFront pricing details, please check the below reference.
Options A and B are incorrect: Because the data transfer out to the internet or origin is not free. A different rate is charged depending on the region.
Option C is CORRECT: If the CloudFront origin is hosted in AWS like EC2, the origin fetches are free.
Option D is incorrect: Because for each custom SSL certificate associated with one or more CloudFront distributions using the Dedicated IP version of custom SSL certificate support, you are charged at $600 per month.
Reference:
https://aws.amazon.com/cloudfront/pricing/