Exam AWS Certified Solutions Architect - Associate SAA-C03 topic 1 question 139 discussion

i go for D here A and B says you are copying the file to another bucket using lambda, C an D just uses S3 replication to copy the files, They are doing exactly the same thing while C and D do not require setting up of lambda, which should be more efficient The question says the team is manually copying the files, automatically replicating the files should be the most efficient method vs manually copying or copying with lambda.

C and D aren't answers as replicating the S3 bucket isn't efficient, as other teams are starting to use it to store larger docs not related to the reporting, making replication not useful. As Amazon SageMaker Pipelines, ..., is now supported as a target for routing events in Amazon EventBridge, means the answer is B https://aws.amazon.com/about-aws/whats-new/2021/04/new-options-trigger-amazon-sagemaker-pipeline-executions/

c is the answer , S3 event notification can directly invoke a Lambda function, which can then in turn trigger a SageMaker Pipeline execution, effectively allowing an S3 event to initiate a SageMaker pipeline through a Lambda intermediary. we dont need to invoke EventBridge

S3 replication can use to copy files in different buckets so we don't need lambda. S3 events can't be sent directly to sagemaker so we have to utilise eventbridge who supports many targets including sagemaker.

In the case of S3 event notification only one destination type can be specified for each event notification. https://docs.aws.amazon.com/AmazonS3/latest/userguide/notification-how-to-event-types-and-destinations.html#supported-notification-destinations

gpt said 'C' is solution

Ans D - least operational overhead using replication; I was initially going for Ans C until I spotted S3 event notification can only send to SQS, SNS, Lambda - not directly to Sagemaker; but Eventbridge can send to Sagemaker. Not sure why author prefers A...?

S3 event can't be use to notify sagemaker, So C can't be right option. AB required lambda which is not unnecessary

Answer is D because it requires least operational overhead and S3 replication does the copying for you. Also read this https://docs.aws.amazon.com/AmazonS3/latest/userguide/EventNotifications.html Lambda and Sagemaker are not supported destinations for S3 Event Notifications

I go for C, because option C no need to configure event notifications, but D need to extra work to configure the event notification, for the least operation, option C is best choice

B is the first option I denied. Since it makes the event happens inside the analysis bucket to trigger the lambda function. so if the lambda function is running code to copy files from initial bucket to analysis bucket. Then this lambda function should be triggered by the event in initial bucket like once the data reaches in the initial bucket then lambda is triggered. D is the answer.

Utilizing a lambda function would introduce additional operational overhead, eliminating options A and B. S3 replication offers a simpler setup and efficiently accomplishes the task. S3 notifications cannot use SageMaker as a destination; the permissible destinations include SQS, SNS, Lambda, and Eventbridge, so C is out.

Create lambda for replication is overhead. This dismisses A and B S3 event notification cannot be directed to Sagemaker directly. This dismisses C Correct Answer: D

D provide the least operational overhead

Option D is the solution with the least operational overhead: Use S3 replication between buckets Send S3 events to EventBridge Add Lambda and SageMaker as EventBridge rule targets The reasons this has the least overhead: S3 replication automatically copies new objects to analysis bucket EventBridge allows easily adding multiple targets for events No custom Lambda function needed for copying objects Leverages managed services for event processing

Correct: D B & D the only possible as Sagemaker is not supported as target for S3 events. Using bucket replication as D mention is more efficient than using a lambda as B mention.

Option D is correct because it combines S3 replication, event notifications, and Amazon EventBridge to automate the copying of files from the initial S3 bucket to the analysis S3 bucket. It also allows for the execution of Lambda functions and integration with SageMaker Pipelines. Option A is incorrect because it suggests manually copying the files using a Lambda function and event notifications, but it does not utilize S3 replication or EventBridge for automation. Option B is incorrect because it suggests using S3 event notifications directly with EventBridge, but it does not involve S3 replication or utilize Lambda for copying the files. Option C is incorrect because it only involves S3 replication and event notifications without utilizing EventBridge or Lambda functions for further processing.