Create Distribution:
Once you've stored your objects in your origin server. To make Amazon CloudFront recognize your objects, you need to create a distribution, which is a link between an Amazon S3 bucket (the origin server) and a domain name (which Amazon CloudFront automatically assigns). To create a distribution you need to set a configuration in which you specify Bucket name, CNAME(s), Comment, Enable/Disable. In configuration CNAME(s) and Comment are optional.