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Amazon SOA-C03 Exam - Topic 5 Question 7 Discussion

A CloudOps engineer needs to track the costs of data transfer between AWS Regions. The CloudOps engineer must implement a solution to send alerts to an email distribution list when transfer costs reach 75% of a specific threshold.What should the CloudOps engineer do to meet these requirements?
C) Use AWS Budgets to create a cost budget for data transfer costs. Set an alert at 75% of the budgeted amount. Configure the budget to send a notification to the email distribution list when costs reach 75% of the threshold.
A) Create an AWS Cost and Usage Report. Analyze the results in Amazon Athena. Configure an alarm to publish a message to an Amazon Simple Notification Service (Amazon SNS) topic when costs reach 75% of the threshold. Subscribe the email distribution list to the topic.
B) Create an Amazon CloudWatch billing alarm to detect when costs reach 75% of the threshold. Configure the alarm to publish a message to an Amazon Simple Notification Service (Amazon SNS) topic. Subscribe the email distribution list to the topic.
D) Set up a VPC flow log. Set up a subscription filter to an AWS Lambda function to analyze data transfer. Configure the Lambda function to send a notification to the email distribution list when costs reach 75% of the threshold.

Amazon SOA-C03 Exam - Topic 5 Question 7 Discussion

Actual exam question for Amazon's SOA-C03 exam
Question #: 7
Topic #: 5
[All SOA-C03 Questions]

A CloudOps engineer needs to track the costs of data transfer between AWS Regions. The CloudOps engineer must implement a solution to send alerts to an email distribution list when transfer costs reach 75% of a specific threshold.

What should the CloudOps engineer do to meet these requirements?

Show Suggested Answer Hide Answer
Suggested Answer: C

According to the AWS Cloud Operations and Cost Management documentation, AWS Budgets is the recommended service to track and alert on cost thresholds across all AWS accounts and resources. It allows users to define cost, usage, or reservation budgets, and configure notifications to trigger when usage or cost reaches defined percentages of the budgeted value (e.g., 75%, 90%, 100%).

The AWS Budgets system integrates natively with Amazon Simple Notification Service (SNS) to deliver alerts to an email distribution list or SNS topic subscribers. AWS Budgets supports granular cost filters, including specific service categories such as data transfer, regions, or linked accounts, ensuring precise visibility into inter-Region transfer costs.

By contrast, CloudWatch billing alarms (Option B) monitor total account charges only and do not allow detailed service-level filtering, such as data transfer between Regions. Cost and Usage Reports (Option A) are for detailed cost analysis, not real-time alerting, and VPC Flow Logs (Option D) capture traffic data, not billing or cost-based metrics.

Thus, using AWS Budgets with a 75% alert threshold best satisfies the operational and notification requirements.


by Arlene at Nov 24, 2025, 06:34 AM

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Viki
3 months ago
D seems complex. Lambda adds unnecessary steps. Stick with B!
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Lonny
3 months ago
A is also good, but requires more setup with Athena.
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Ayesha
4 months ago
But C might not alert you instantly. B is more proactive.
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Pearly
4 months ago
Option C seems better for budgeting. It gives more control over costs.
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Flo
4 months ago
I agree, B is easy to implement. Real-time alerts are crucial!
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Lisbeth
4 months ago
I think option B is the simplest way to track costs. CloudWatch alarms are straightforward.
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Lucia
4 months ago
I agree with B, it's straightforward and effective!
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Wilda
5 months ago
Wait, can you really use Lambda for this? Sounds like overkill.
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Erinn
5 months ago
A seems overly complicated for just cost alerts.
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Abraham
5 months ago
I think C is better for tracking budgets specifically.
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Harris
5 months ago
Option A looks good, but I'm not sure I want to deal with Athena if I don't have to.
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Leonardo
6 months ago
Haha, I bet the CloudOps engineer is just hoping they don't go over budget and have to explain it to the boss!
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Louis
6 months ago
Option D is interesting, but it might be overkill for this use case.
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Tegan
6 months ago
I like how option C uses AWS Budgets to manage the cost tracking.
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Wilda
6 months ago
Option B seems like the most straightforward approach.
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Vincent
6 months ago
I think option D is a bit off track. VPC flow logs seem more focused on traffic analysis rather than cost tracking, right?
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Fairy
6 months ago
I have a vague recollection of using Cost and Usage Reports in a practice scenario. Option A might be the right choice, but I’m not confident about the Athena part.
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Dustin
7 months ago
I think option B is the way to go. It's simple, straightforward, and should meet the requirements without any unnecessary complexity.
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Annice
7 months ago
Option D with the VPC flow logs and Lambda function is an interesting approach, but it might be overkill for just this use case. I'd probably go with option B or C.
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Albina
7 months ago
Hmm, I'm leaning towards option A. Creating a Cost and Usage Report and analyzing it in Athena gives you more flexibility and visibility into the cost data.
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Ria
7 months ago
I'm not entirely sure, but I feel like option B could work too. I practiced a similar question about CloudWatch alarms and SNS notifications.
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Dominic
7 months ago
I remember studying AWS Budgets, and I think option C sounds familiar. It seems like the right approach for tracking costs effectively.
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Leonard
8 months ago
Option B is the simplest way to set up billing alerts.
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Paz
8 months ago
I'm a little unsure about this one. Option C with AWS Budgets seems interesting, but I'm not sure if that's the best fit for just tracking data transfer costs.
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Tawna
8 months ago
I think option B is the way to go here. Creating a CloudWatch billing alarm and hooking it up to an SNS topic seems like the most straightforward approach.
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Precious
2 months ago
Definitely the best choice for timely alerts!
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Melissa
3 months ago
Plus, it’s quick to set up. No complex configurations needed.
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Vince
3 months ago
SNS integration makes it easy to notify the team.
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Gilberto
3 months ago
I agree, option B is simple and effective.
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Shonda
8 months ago
Yeah, CloudWatch alarms are reliable for monitoring costs.
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