Exam AWS Certified Solutions Architect - Associate SAA-C03 topic 1 question 567 discussion

The key reasons are: ° API Gateway removes the need to manage servers to receive the HTTP requests from sensors ° Lambda functions provide a serverless compute layer to process data as needed ° DynamoDB is a fully managed NoSQL database that scales automatically ° This serverless architecture has minimal operational overhead to manage ° Options B, C, and D all require managing EC2 instances which increases ops workload ° Option C also adds SQL Server admin tasks and licensing costs ° Option D uses EFS file storage which requires capacity planning and management

Options B,C,D involves unwanted operational overheads due to EC2 So A is the right answer

Thinking of that, there is not many questions about IoT Core, but this product could be an excellent answer for the need.

Workload runs every hour, must use managed services, more features in the future, LEAST operational overhead = AWS Lambda functions. HTTP requests, must use managed services, more features in the future, LEAST operational overhead = API Gateway. Must use managed services, more features in the future, LEAST operational overhead =Amazon DynamoDB.

key word is "must use managed services when possible" api ,lambda dynamodb are serverless. so answer is A

"The workload will receive more features in the future ..." -> DynamoDB

A seems to be the right answer

A is correct.