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AWS Certified Solutions Architect - Professional · AWS
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In reality, you should deploy additional API Gateways and ALBs, along with EKS clusters in the appropriate Regions. Given the limited answer choices here, I would pick option C
This APIs use non-standard HTTP methods (LINK, UNLINK, LOCK, UNLOCK). CloudFront only forwards a fixed set of HTTP methods (GET, HEAD, OPTIONS, PUT, PATCH, POST, DELETE), and in practice non-standard methods can be blocked or return 403 when you put CloudFront in front of an ALB. Global Accelerator works at the network layer (TCP/UDP). It doesn’t inspect or normalize HTTP methods, so it will forward your custom LINK/UNLINK/LOCK/UNLOCK traffic unchanged to the ALB. That avoids the CloudFront method limitation.
Global Accelerator provides static Anycast IPs that route requests over the AWS global network backbone. Improves latency and consistency for global users without needing multi-Region deployment. Supports all TCP/UDP traffic, so non-standard REST methods are not a problem.