Exam AWS Certified Solutions Architect - Associate SAA-C03 topic 1 question 21 discussion

D because all of the components are infinitely scalable dynamoDB, API Gateway, Lambda, and of course s3+cloudfront

The solution that will meet these requirements with the least operational overhead is D: Use an Amazon S3 bucket to host the website's static content, deploy an Amazon CloudFront distribution, set the S3 bucket as the origin, and use Amazon API Gateway and AWS Lambda functions for the backend APIs. Store the data in Amazon DynamoDB. Using Amazon S3 to host static content and Amazon CloudFront to distribute the content can provide high performance and scale for websites with millions of requests each hour. Amazon API Gateway and AWS Lambda can be used to build scalable and highly available backend APIs to support the website, and Amazon DynamoDB can be used to store the data. This solution requires minimal operational overhead as it leverages fully managed services that automatically scale to meet demand.

Millisecond Latency = DynamoDB

D as DynamoDB is only suitable because of its really fast milliseconds speed.

Requirement analysis: - Build an e commerce application -> Typical 3 tiers app. - Deployment. - Scale quickly. - Least operational overhead. Based on what we get from the question, option D is quite self explanatory. S3 - Static resources storage, this can also used to deploy static web page if SPA is not desired CloudFront - Distribute application through edge locations API Gateway, Lambda, and DynamoDB - Simple application and db layers, scale quickly, serverless so no operational burden

Option D: Use Amazon S3 to store the website’s static content (like images, HTML, etc.). Static content doesn’t change based on user input, so S3 is perfect because it’s highly scalable and can handle millions of requests. Use Amazon CloudFront to distribute the content globally, reducing latency by delivering it from servers close to the user. For backend operations (like placing orders), use API Gateway and Lambda functions. API Gateway handles incoming requests, while Lambda runs code without needing servers (it’s serverless), which automatically scales to meet the traffic demand. Store the data in DynamoDB: DynamoDB is a fully managed, NoSQL database that can handle huge traffic spikes with very fast performance, which is important for millions of visitors.

My first answer is C. Coz it's high performance and high scalability. I didn't get the D answer: (1) So S3 can host static website? also is it mentioned on the question? (2) Lambda, S3, DynamoDB, all service managed by AWS, but so what, same with (1), which component host the main page?

D operational overhead Lamda is a serverless computing let you run code without provisioning or managing service API Gateway -> Lamda -> Dynamo DB

can someone pls tell me how d is the answer. doesn't lambda time out in 15min

While everyone is voting for D but no where in the question it mentions that website is made of static pages. Other than not mentioning static, option D checks all the boxes.

I struggled between A and D a little bit, then realize that A is not correct because it's hosting website in "different" buckets.

Least operational overhead is only possible with managed services that deliver the required solution. A: Cannot store order data in S3 as there is no processing in S3 B: Overhead of EC2 and RDS and ALB, too many moving parts C: Container management is overhead and RDS too D: S3 for static is best practice. CloudFront helps with scaling. API GW with Lambda is fully managed. DynamoDB for transactions is managed scalable solution.

Answer-D

D is the best asnwer for least operation

D because it is the most logical solution

correct answer

So in this question, how do you know FOR SURE that the website is static because it does not give you any clues. I know the API gateway makes the most sense with "millions of requests each hour", but it's very vague and leaves a grey area if the web site is static or not.