AWS SAA-C03 #56

A company has registered its domain name with Amazon Route 53. The company uses Amazon API Gateway in the ca-central-1 Region as a public interface for its backend microservice APIs. Third-party services consume the APIs securely. The company wants to design its API Gateway URL with the company's domain name and corresponding certificate so that the third-party services can use HTTPS.

Which solution will meet these requirements?

A. Create stage variables in API Gateway with Name="Endpoint-URL" and Value="Company Domain Name" to overwrite the default URL. Import the public certificate associated with the company's domain name into AWS Certificate Manager (ACM).

B. Create Route 53 DNS records with the company's domain name. Point the alias record to the Regional API Gateway stage endpoint. Import the public certificate associated with the company's domain name into AWS Certificate Manager (ACM) in the us-east-1 Region.

C. Create a Regional API Gateway endpoint. Associate the API Gateway endpoint with the company's domain name. Import the public certificate associated with the company's domain name into AWS Certificate Manager (ACM) in the same Region. Attach the certificate to the API Gateway endpoint. Configure Route 53 to route traffic to the API Gateway endpoint.

D. Create a Regional API Gateway endpoint. Associate the API Gateway endpoint with the company's domain name. Import the public certificate associated with the company's domain name into AWS Certificate Manager (ACM) in the us-east-1 Region. Attach the certificate to the API Gateway APIs. Create Route 53 DNS records with the company's domain name. Point an A record to the company's domain name.


The correct solution is C.

You should create a Regional API Gateway endpoint and associate the API Gateway endpoint with the company's domain name. Import the public certificate associated with the company's domain name into AWS Certificate Manager (ACM) in the same Region. Attach the certificate to the API Gateway endpoint. Finally, configure Route 53 to route traffic to the API Gateway endpoint.

This solution meets all the requirements because it allows you to use your own domain name for your API Gateway endpoint, ensures that traffic is routed correctly via Route 53, and secures your APIs with HTTPS by using a certificate from ACM. Remember, when you use ACM with API Gateway, the certificate must be in the same Region as your API endpoint.

Sure, here's why the other options are incorrect:

Option A: Creating stage variables in API Gateway with Name="Endpoint-URL" and Value="Company Domain Name" to overwrite the default URL is not a valid approach. Stage variables are used to pass operational parameters to a deployment stage, not to overwrite the default URL of the API Gateway.

Option B: While creating Route 53 DNS records with the company's domain name and pointing the alias record to the Regional API Gateway stage endpoint is a valid step, importing the public certificate associated with the company's domain name into AWS Certificate Manager (ACM) in the us-east-1 Region is incorrect. The certificate needs to be in the same region as your API endpoint.

Option D: This option incorrectly suggests importing the public certificate associated with the company's domain name into AWS Certificate Manager (ACM) in the us-east-1 Region. As mentioned before, the certificate needs to be in the same region as your API endpoint. Also, pointing an A record to the company's domain name is not a valid step in this context. The A record should point to the API Gateway endpoint.

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