Exam AWS Certified Developer Associate topic 1 question 311 discussion

I will go with C as well, Amazon Cognito gives us the possibility to manage users without adding additional business logic. Furthemor we can store user data by using the unique key and store the information in DynamoDB.

The correct solution is to configure and use Amazon Cognito. This will allow the application to support 10,000 users concurrently and will provide a unique identifier for each user. By using Amazon Cognito, the company can authenticate users and then access DynamoDB with the authenticated users to store their preferences in a table. This approach will allow the company to control access to the DynamoDB table and to scale to any number of users. Creating a user cookie or deploying an Amazon CloudFront distribution with an OAI would not solve the problem because these solutions do not provide a way to uniquely identify users or control access to DynamoDB. Creating an IAM user for each user and using fine-grained access control on the DynamoDB table would not be practical or scalable because it would require the company to manage and maintain a large number of IAM users.

Choosing C

Ans: C When dealing with user profiles in serverless applications we often turn to Cognito for managing their credentials while the app itself will store user entities. https://www.sorenandersen.com/manage-user-profile-data-between-cognito-and-dynamodb/