Which of the following allows for cost-effective static website hosting within Amazon S3?

The chosen answer highlights a key feature of Amazon S3 that enables cost-effective static website hosting through integration with Route 53. Route 53 is a scalable Domain Name System (DNS) web service that helps route users to your applications by translating domain names into IP addresses. When hosting a static website on Amazon S3, integrating with Route 53 allows users to map a custom domain name to the S3 bucket that contains the website files. This setup not only enhances user experience by providing a more memorable domain name but also facilitates effective traffic management and routing, making it a more professional solution for static hosting.

Using Route 53 in conjunction with S3 can optimize costs as well, since you pay only for the requests and data transfer associated with your bucket, while avoiding the additional costs associated with more complex hosting solutions like EC2. Thus, the integration with Route 53 is a powerful aspect of leveraging S3 for static website hosting.