The answer is AWS Budgets, which is the correct service for setting up proactive cost alerts when actual AWS spending exceeds a specified threshold like $5,000 per month. AWS Budgets allows you to define a cost budget and configure Amazon SNS notifications that fire in real time when actual or forecasted costs reach your defined limits, enabling proactive monitoring rather than reactive analysis. On the AWS Certified SysOps Administrator Associate SOA-C02 exam, this question tests your ability to distinguish between monitoring and analytical services—a common trap is choosing Cost Explorer, which is a visualization and forecasting tool that does not send proactive alerts. Remember that Budgets is for action and alerts, while Cost Explorer is for insight and trends. A helpful memory tip: Budgets Beats alerts, while Explorer Explains costs.
SOA-C02 Cost and Performance Optimization Practice Question
This SOA-C02 practice question tests your understanding of cost and performance optimization. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company wants to receive an alert when its AWS spending exceeds $5,000 in a month. The SysOps administrator needs to set up a proactive alert that monitors actual costs. Which AWS service should be used?
Why wrong: Cost Explorer provides historical cost data and forecasts but does not natively send proactive alerts when spending exceeds a threshold.
B
AWS Budgets
AWS Budgets allows you to create a cost budget with a $5,000 limit and configure alerts to notify you when actual or forecasted costs exceed that amount.
C
AWS Trusted Advisor
Why wrong: Trusted Advisor provides cost optimization recommendations (e.g., idle resources) but does not provide budget alerts based on spending thresholds.
D
AWS CloudTrail
Why wrong: CloudTrail records API calls for auditing and compliance, not for monitoring spending.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
AWS Budgets
AWS Budgets is the correct service because it allows you to set a cost budget that proactively sends alerts when actual costs exceed a specified threshold (e.g., $5,000 per month). Unlike Cost Explorer, which is an analytical tool, Budgets provides real-time notifications via Amazon SNS when costs reach or are forecasted to exceed the budgeted amount, enabling proactive monitoring of actual spending.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
AWS Cost Explorer
Why it's wrong here
Cost Explorer provides historical cost data and forecasts but does not natively send proactive alerts when spending exceeds a threshold.
✓
AWS Budgets
Why this is correct
AWS Budgets allows you to create a cost budget with a $5,000 limit and configure alerts to notify you when actual or forecasted costs exceed that amount.
Related concept
Read the scenario before looking for a memorised answer.
✗
AWS Trusted Advisor
Why it's wrong here
Trusted Advisor provides cost optimization recommendations (e.g., idle resources) but does not provide budget alerts based on spending thresholds.
✗
AWS CloudTrail
Why it's wrong here
CloudTrail records API calls for auditing and compliance, not for monitoring spending.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse AWS Cost Explorer's historical analysis capabilities with proactive alerting, assuming it can send notifications, when in fact it only provides dashboards and reports without automated threshold-based alerts.
Detailed technical explanation
How to think about this question
AWS Budgets uses a cost budget type that evaluates actual costs from the AWS Cost and Usage Report (CUR) against the defined budget amount. Alerts are triggered via Amazon CloudWatch alarms or SNS topics, and you can set multiple thresholds (e.g., 80% and 100%) for granular notification. A common real-world scenario is setting a monthly budget of $5,000 with an alert at 80% ($4,000) to allow time for remediation before exceeding the limit.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Cost and Performance Optimization — This question tests Cost and Performance Optimization — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: AWS Budgets — AWS Budgets is the correct service because it allows you to set a cost budget that proactively sends alerts when actual costs exceed a specified threshold (e.g., $5,000 per month). Unlike Cost Explorer, which is an analytical tool, Budgets provides real-time notifications via Amazon SNS when costs reach or are forecasted to exceed the budgeted amount, enabling proactive monitoring of actual spending.
What should I do if I get this SOA-C02 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A company wants to receive alerts when its AWS costs exceed a certain threshold. Which AWS service should be used?
easy
A.Amazon CloudWatch
B.AWS Cost Explorer
C.AWS Trusted Advisor
✓ D.AWS Budgets
Why D: AWS Budgets allows you to set custom cost and usage budgets and receive alerts when actual or forecasted costs exceed a defined threshold. It directly supports cost-based alerting with actions such as sending an SNS notification or applying an IAM policy to restrict resources when the budget limit is breached.
Last reviewed: Jun 11, 2026
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This SOA-C02 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the SOA-C02 exam.
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