SOA-C02 Cost and Performance Optimization Practice Question
A SysOps administrator wants to monitor the cost and usage of AWS resources for different departments. Which AWS service should they use to tag resources and generate cost allocation reports?
⚠ Common exam trap
SOA-C02 often tests the confusion between cost monitoring tools, tempting candidates to pick AWS Budgets for anything cost-related even when the question specifically asks for tagging and cost allocation reporting.
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 Cost Explorer with cost allocation tags
AWS Cost Explorer with cost allocation tags is the correct answer because it allows you to activate user-defined or AWS-generated tags as cost allocation tags, then filter and group cost and usage data by those tags to produce per-department reports. Cost Explorer is the native billing tool for visualizing spend over time and supports tag-based breakdowns directly. Trusted Advisor, Budgets, and Config do not generate cost allocation reports by tag.
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 Trusted Advisor
Why it's wrong here
AWS Trusted Advisor evaluates your environment against AWS best practices across cost optimization, performance, security, and fault tolerance. Its cost checks identify idle resources, underutilized instances, and reserved capacity opportunities, but it does not expose your billing data for time-series analysis or department-level grouping. Trusted Advisor is advisory in nature and does not replace a cost reporting service.
- ✗
AWS Budgets
Why it's wrong here
AWS Budgets allows you to set cost, usage, and coverage budgets and to receive alerts when actual or forecasted spend exceeds thresholds. It is a proactive monitoring tool, not an analytical reporting tool, so it cannot generate historical, tag-filtered reports of spending by department. Budgets track limits and issue notifications, but they lack the drill-down and grouping capabilities needed for detailed cost reporting.
- ✗
AWS Config
Why it's wrong here
AWS Config records resource configurations, captures changes, and evaluates them against compliance rules. It does not ingest billing data or usage metrics, so its console and API provide configuration items and compliance history rather than cost data. For these reasons, AWS Config cannot produce spending reports or departmental cost breakdowns.
- ✓
AWS Cost Explorer with cost allocation tags
Why this is correct
AWS Cost Explorer is a native billing and cost management service that provides interactive charts and reports of AWS costs and usage over time. When cost allocation tags are activated and applied to resources, you can filter and group costs by tags such as department, giving each department its own spend report. It also supports forecasting and granular time-grain views, making it the correct choice for departmental cost reporting.
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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 SysOps administrator wants to monitor the cost of EC2 instances. Which AWS service should be used to visualize and track costs over time?
easy- A.AWS CloudWatch
- B.AWS Budgets
- C.AWS Trusted Advisor
- ✓ D.AWS Cost Explorer
Why D: AWS Cost Explorer is the dedicated cost management tool that provides visualization of historical and forecasted AWS spending, including EC2 costs, through graphs, filters, and grouping by service, tag, or linked account. It ingests the Cost and Usage Report data and lets administrators track spend trends over time, which is exactly what the question asks for.
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official Amazon Web Services exam blueprint
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.