You might want a URL that is prettier than the default if you want to use Amazon S3 to share files publicly for your website or to enable downloads, for example:
hellodownloads.yourdomain.com
To make this real, you can set a CNAME which points your domain to Amazon S3 bucket.
First, confirm that the name of your bucket matches the name of your CNAME. To use an example, if I wanted the CNAME to be…