AZ-900 Describe Azure management and governance Practice Question
Which Azure tool helps estimate the cost savings of migrating on-premises workloads to Azure compared to current on-premises costs?
⚠ Common exam trap
Watch out — candidates often confuse the Azure Pricing Calculator (which calculates costs for new deployments) with the TCO Calculator (which compares existing on-premises costs to Azure), leading them to choose the Pricing Calculator for migration savings estimates.
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
✓
Azure TCO Calculator
The Azure TCO (Total Cost of Ownership) Calculator is specifically designed to compare the costs of running on-premises workloads against the equivalent Azure services. It takes inputs such as server, storage, and network specifications, then estimates the cost savings by factoring in Azure pricing, labor, and operational expenses. This makes it the correct tool for estimating cost savings from migration.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Azure Pricing Calculator
Why it's wrong here
The Azure Pricing Calculator is a service-configuration estimator that lets you specify exact Azure service SKUs, quantities, regions, and reservation terms to calculate monthly and upfront charges. It does not ingest any data about your existing on-premises hardware, maintenance, power, cooling, or labor costs. Therefore, it can only give you a raw Azure price point, not a comparative TCO analysis, so you would have to perform the on-premises costing separately to approximate migration savings.
- ✓
Azure TCO Calculator
Why this is correct
The Azure TCO Calculator is purpose-built to compare your current on-premises environment's total cost with an equivalent Azure deployment over a configurable period, typically one to five years. It captures servers, databases, storage, networking, electricity, IT labor, facility overhead, and software license costs through an interactive questionnaire, then factors in Azure service pricing and benefits like Azure Hybrid Benefit. This yields an estimated savings figure and a side-by-side cost breakdown, making it the correct tool for quantifying pre-migration financial benefit.
- ✗
Azure Cost Management
Why it's wrong here
Azure Cost Management is a post-deployment financial governance tool that tracks actual Azure usage through cost analysis, budgets, and alerts. It ingests real billing and consumption telemetry from existing subscriptions, so it cannot estimate what you would have paid on-premises or project savings from a migration that has not occurred. It is designed to optimize incurred cloud spend, not to model hypothetical TCO comparisons.
- ✗
Azure Advisor
Why it's wrong here
Azure Advisor is a personalized recommendation engine that continuously assesses your existing Azure resources using telemetry and configuration data to suggest high-availability, security, performance, and cost optimizations. It only acts on live subscriptions and deployed services; without a migration, it has no inventory to analyze. Advisor can help reduce costs on resources you already run, but it lacks any on-premises workload costing engine and cannot produce a pre-migration total cost comparison.
Go deeper
Related to this question
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Azure Cost Management and Billing
Key term
TCO
Total Cost of Ownership (TCO) is the complete cost of owning and operating an IT asset over its entire lifecycle, including purchase, maintenance, support, energy, and disposal costs, not just the initial price tag.
Key term
Total cost of ownership
Total cost of ownership (TCO) is the complete cost of owning and operating an IT asset over its entire lifecycle, including purchase price, maintenance, support, energy, and disposal fees.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This AZ-900 practice question is part of Courseiva's free Microsoft 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 AZ-900 exam.