A global company hosts its web application on Amazon EC2 instances behind an Application Load Balancer (ALB). The web application has static data and dynamic data. The company stores its static data in an Amazon S3 bucket. The company wants to improve performance and reduce latency for the static data and dynamic data. The company is using its own domain name registered with Amazon Route 53.
What should a solutions architect do to meet these requirements?
A. Create an Amazon CloudFront distribution that has the S3 bucket and the ALB as origins. Configure Route 53 to route traffic to the CloudFront distribution.
B. Create an Amazon CloudFront distribution that has the ALB as an origin. Create an AWS Global Accelerator standard accelerator that has the S3 bucket as an endpoint Configure Route 53 to route traffic to the CloudFront distribution.
C. Create an Amazon CloudFront distribution that has the S3 bucket as an origin. Create an AWS Global Accelerator standard accelerator that has the ALB and the CloudFront distribution as endpoints. Create a custom domain name that points to the accelerator DNS name. Use the custom domain name as an endpoint for the web application.
D. Create an Amazon CloudFront distribution that has the ALB as an origin. Create an AWS Global Accelerator standard accelerator that has the S3 bucket as an endpoint. Create two domain names. Point one domain name to the CloudFront DNS name for dynamic content. Point the other domain name to the accelerator DNS name for static content. Use the domain names as endpoints for the web application.
A
技巧：排除明显错误选项，在没有明显错误的选项中选择最合理的选项。
某全球公司在 Application Load Balancer（ALB）后面的 Amazon EC2 实例上托管其 Web 应用程序。该Web 应用程序包含静态数据和动态数据。该公司将静态数据存储在Amazon S3存储桶中，现在希望提高性能并降低静态数据和动态数据的延迟。公司使用的是在Amazon Route 53注册的自有域名。
A. 正确。创建一个 Amazon CloudFront 分发，将S3存储桶和ALB作为源。配置Route 53以将流量路由到CloudFront分发。CloudFront 是一个全球内容分发网络（CDN），可以缓存并快速将内容（包括静态文件和动态生成的页面）传递给用户。通过将S3存储桶（存储静态数据）和 ALB （处理动态请求）都作为 CloudFront分发的源，可以确保所有类型的请求都通过 CloudFront 进行加速，从而提高性能并降低延迟。Route 53 可以将域名流量路由到 CloudFront 分发，实现统一的访问入口。
B. 不正确。创建一个Amazon CloudFront分发，将ALB作为源。创建一个AWS Global Accelerator标准加速器，将S3存储桶作为端点。配置Route 53以将流量路由到CloudFront分发。Global Accelerator 主要用于提高应用程序的可用性和性能，通过将流量路由到多个AWS区域中的终端节点。
C. 不正确。创建一个Amazon CloudFront分发，将S3存储桶作为源。创建一个AWS Global Accelerator标准加速器，将ALB和CloudFront分发作为端点。创建一个指向加速器DNS名称的自定义域名。使用该自定义域名作为Web应用程序的端点。该方案过于复杂，且不必要。将ALB 和 CloudFront 分发都作为 Global Accelerator 的端点并没有明显的性能优势，反而增加了架构的复杂性和管理难度。
D. 不正确。创建一个Amazon CloudFront分发，将ALB作为源。创建一个AWS Global Accelerator标准加速器，将S3存储桶作为端点。创建两个域名。将一个域名指向CloudFront DNS名称以处理动态内容，将另一个域名指向加速器DNS名称以处理静态内容。使用这些域名作为Web应用程序的端点。
E. 不正确。该方案更加复杂繁琐。将静态内容和动态内容分开处理增加了用户访问的复杂性， CloudFront本身已经能够高效地处理静态和动态内容，无需额外的Global Accelerator来加速S3存储桶。