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Roadmap to becoming a developer in 2022
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developer-roadmap/src/data/best-practices/aws/content/use-alias-records.md

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ALIAS Records

Use ALIAS records.

An ALIAS record will link your record set to a particular AWS resource directly (i.e. you can map a domain to an S3 bucket), but the key is that you don't get charged for any ALIAS lookups. So whereas a CNAME entry would cost you money, an ALIAS record won't. Also, unlike a CNAME, you can use an ALIAS on your zone apex. You can read more about this on the AWS page for creating alias resource record sets.