SOA-C02 Cost and Performance Optimization Practice Question
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?
⚠ Common exam trap
Many exam-takers 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.
Answer choices
Why each option matters
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.
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
AWS Cost Explorer is a data visualization and analytics service that shows historical cost usage and provides future forecasts based on existing trends, but it does not contain a native alerting engine. To be notified when spending passes $5,000, you would need to export or monitor its data through another mechanism, such as AWS Budgets or a custom CloudWatch-based solution. Therefore, while Cost Explorer can help you analyze what you spent, it cannot proactively warn you that you have exceeded a threshold.
- ✓
AWS Budgets
Why this is correct
AWS Budgets is the native service for setting a custom cost budget, such as $5,000 per month, and receiving alerts when actual or forecasted charges reach or exceed that amount. You can define multiple alert thresholds (for example, 80% and 100%) and publish notifications to Amazon SNS, which can email you or trigger automated workflows. This makes AWS Budgets the correct solution for a spending alert.
- ✗
AWS Trusted Advisor
Why it's wrong here
AWS Trusted Advisor evaluates your account against AWS best practices and provides recommendations in categories like cost optimization, performance, security, and fault tolerance. While it may flag idle or underutilized resources that waste money, it does not track your overall spend against a dollar threshold or send budget alerts. Its cost-related guidance is advisory about specific resources, not a proactive alarm for exceeding a $5,000 total spend.
- ✗
AWS CloudTrail
Why it's wrong here
AWS CloudTrail records every API call made in your account, including actions like creating or terminating EC2 instances, and stores those logs for auditing and security analysis. It is not designed to aggregate billing data or compare spending against a budget, and it cannot notify you when overall AWS charges cross a financial threshold. CloudTrail is a governance tool, while budget alerts are handled by a separate cost management service.
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Same concept, more angles
1 more way this is tested on SOA-C02
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.
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.