Route53
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https://gyazo.com/b9c76dc096d02affa0402099fc61f535
A service for registering domains, etc.
Domains are necessary because humans cannot access IP addresses without them.
For example, it's better to use http://www.nic.ad.jp/ instead of 192.41.192.129.
When you publish something with EC2, a domain is assigned based on the project name + region. However, if you want to use a custom domain name instead of the automatically assigned domain name from AWS, you need Route 53.
With Route 53, you can purchase a domain itself or specify a domain obtained from another service, and you can also use routing policies to implement features such as displaying a sorry page when there is a failure in the LB. Related
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