Exam AWS Certified Developer - Associate DVA-C02 topic 1 question 13 discussion

C https://docs.aws.amazon.com/sns/latest/dg/sns-message-filtering.html

Option C is the most scalable way to meet the requirements. This solution allows for a single SNS topic to be used for all partners, which minimizes the need for code changes when adding new partners. By publishing messages with specific attributes to the SNS topic and applying the appropriate filter policy to the topic subscriptions, partners will only receive notifications for their own orders. This approach allows for a more flexible and scalable solution, where new partners can be added to the system with minimal changes to the existing codebase. Option A and D may not be scalable when there are a large number of partners, as creating a separate SNS topic for each partner or subscribing all partners to a single topic may not be feasible. Option B may result in a large number of Lambda functions that need to be managed separately.

https://docs.aws.amazon.com/sns/latest/dg/sns-message-filtering.html

A) Eliminated - Every time a new partner is added, a new SNS topic needs to be created. This requires manual configuration and updates to the infrastructure.

keyword: MOST scalable way, only the partner's own orders ==> Discard A: you must update lambda for new topic added, but it simple for case having few partners, and little change ==> Discard B: You must create duplicate lambda function and maintain it. But best case for customized comlexity requirements ==> Discard D: it is easy to scalable, but violate rule 'only the partner's own orders', when a partner can see msg of all anothers C: best choice, match with 2 keywords above

because of the fact that By default, you can have up to 200 filter policies per topic, the C option can't be the wright answer, but it's the A choice. since we can go up to 100 00 topics per SNS

A works, but C is better, benchods. More efficient. Have to remember good curry cannot be had in a hurry

https://docs.aws.amazon.com/sns/latest/dg/example-filter-policies.html

C is the correct answer.

Funny understand why some people want to create separate SNS for each partner. You have got the option to filter and send notifications to the appropriate partner.

Answer is C ... No Question

you can create up to 10.000 filter policies per AWS account 200 filter policies per topic (not subscription!) limits option C to 200 partners 100 000 topics per AWS account, limits option A to 100 000 partners A and C works but A has better scalability with ability to add 100 000 partners

You can using a filter policy to just sent the info by partner

C. adding a new partner would only require to create a new subscription with the right filter

C seems the most efficient way. when you add more partners, you can just assign new codes for each partner. with the codes, you can send notifications to specific paters

The answer is A since this question has two crucial requirements: a) ... with the fewest code changes possible. b) ...in the MOST scalable way ChatGPT initially gives an incorrect answer and then adjusts its response when requirements are asked.

Got this question in exam. Correct answer is C.