A company has developed a platform which consists of multiple components. First is the ability for suppliers to supply data to the platform. And another application component which allows them to perform analysis on that data. The suppliers authenticate using SAML federation. Which of the following will help ensure a complete solution and also ensure a secure way for suppliers to have access to only their set of data?

Answer options:

A.Ingest the data using Kinesis streams. Move the data from Kinesis streams into DynamoDB. Ensure that access is given via STS using temporary access credentials.
B.Ingest the data using Kinesis streams. Move the data from Kinesis streams into DynamoDB. Ensure that access is given via AWS Access Keys.
C.Ingest the data using DynamoDB streams. Stream the data into DynamoDB tables. Ensure that access is given via STS using temporary access credentials.
D.Ingest the data using DynamoDB streams. Stream the data into DynamoDB tables. Ensure that access is given via AWS Access Keys.

Answer – A
The AWS Documentation mentions the following
The AWS Security Token Service (STS) is a web service that enables you to request temporary, limited-privilege credentials for AWS Identity and Access Management (IAM) users or for users that you authenticate (federated users). This guide provides descriptions of the STS API.
Option B is incorrect using AWS Access is not the right approach to giving access
Options C and D are incorrect since DynamoDB streams is not used to ingest data from external sources
For more information on STS and Streams Adaptor for AWS Kinesis , please refer to the below URL
https://docs.aws.amazon.com/STS/latest/APIReference/Welcome.html
https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Streams.KCLAdapter.Walkthrough.html