Azure cost management, budgets and pricing tools

The cost side of the Azure Management & Governance domain — Cost analysis, Budgets, tags, spending limits and the discount options the exam keeps mixing up, AZ-900, 2026 edition.

Here are 7 typical Azure cost-tool questions in the exam's own style — free, each answer explained, no sign-up.

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Cost is the friendliest corner of the Azure Management & Governance domain: there are only a handful of tools, each has one clear job, and the AZ-900 mostly tests whether you can match a tool to a moment. The two-lane diagram above is the whole topic on one page — planning tools on the left, monitoring-and-control tools on the right. Learn which lane a tool lives in and most cost questions answer themselves.

Two lanes: plan before you build, monitor once you’re running

The left lane holds the two planning calculators. The Pricing Calculator estimates the price of a deployment before you build it; the TCO (Total Cost of Ownership) Calculator compares running a workload on-premises versus in Azure to build a migration business case. Both work on hypothetical resources and issue no bills. The right lane is everything that acts on resources you are already running — and it is where this page lives.

Cost analysis vs Budgets vs alerts — three features, not one

The single most-tested distinction here is inside Azure Cost Management, between three features people blur together:

Feature	Job	The tell
Cost analysis	Explore where spend has already gone; slice by service, resource group or tag	”Show me / break down”
Budget	Set a threshold for expected spend	”Set a limit / line”
Cost alert	The notification a budget fires when the line is crossed	”Notify me when”

Cost analysis is the dashboard; a budget is the line you draw; an alert is the message you get. Keep those three verbs — explore, set, notify — straight and this cluster of questions becomes free points.

Tags: how you split a shared bill

Resource tags are name-value labels (like CostCenter: Finance or Project: Apollo) that you attach to resources. Because Cost Management can group and filter spend by tag, tags are the mechanism for cost allocation — splitting one subscription’s bill across departments or projects. Whenever a stem talks about attributing shared cost, the answer almost always involves tags.

Spending limit vs no limit

Credit-based subscriptions — the Azure free account and similar — carry a spending limit: when the included credit is used up, paid services are disabled so you are not charged. Pay-as-you-go has no spending limit; it keeps running and bills you. On pay-as-you-go, a Budget is your early warning, not a hard stop.

The three discount levers

Finally, know the three ways to pay less, because the exam swaps their definitions:

Reservations — commit to a specific resource for 1 or 3 years for a lower rate.
Savings plans for compute — commit to a fixed hourly compute spend for flexibility across services.
Azure Hybrid Benefit — reuse existing Windows Server or SQL Server licenses to cut the rate.

Azure Advisor rounds out the right lane with a free Cost category that flags idle or oversized resources to right-size. The real exam mixes multiple-choice, true/false and drag-and-drop; the seven samples below are standard multiple-choice, and every explanation carries a “Why not the others” so the wrong options teach you as much as the right one.

Two labelled lanes summarising Azure's cost tools. The left lane, 'Plan / estimate — before you build,' holds two cards: the Pricing Calculator, for estimating the price of a planned deployment, and the TCO Calculator, for comparing on-premises cost against Azure for a migration business case. The right lane, 'Monitor / control — resources already running,' holds four cards: Cost analysis, for exploring where money has already gone, broken down by service, resource group or tag; Budgets, for setting a threshold and raising an alert; Azure Advisor cost recommendations, for right-sizing or removing idle resources; and resource tags, the labels that make per-department and per-project cost breakdowns possible. A caption underneath notes that the planning calculators work on hypothetical deployments while everything in the right lane works on live spend.

7 free AZ-900 practice questions

Answers and explanations — no email wall

AZ-900 Question 1 of 7

Inside Microsoft Azure Cost Management, a finance analyst wants to interactively drill into where money has already gone — grouping past charges by service, by resource group, or by tag, and pivoting the view on demand. Which feature is built for that exploration, as opposed to setting a limit or receiving a notification?

Answer: A — Cost analysis.

Azure Cost Management has three cost features with three distinct jobs, and the exam tests whether you can separate them. Cost analysis is the interactive, exploratory view — you slice historical spend by service, resource group, tag or timeframe and pivot it live. Why not the others: a budget is a threshold you set for expected spend, not an exploration view; a cost alert is the notification a budget fires when that threshold is crossed; Azure Advisor produces recommendations to cut cost, but it does not give you the spend-breakdown dashboard. Pro tip: Cost analysis = explore what happened, Budget = set the line, Alert = get told you crossed it.

AZ-900 Question 2 of 7

A single Microsoft Azure subscription is shared by three departments, and finance must split its monthly bill so each department sees only the cost of its own resources. Which approach makes this per-department breakdown possible?

Answer: A — Apply a resource tag such as CostCenter or Department to each resource, then group Cost analysis by that tag.

Tags are name-value labels you attach to resources, and Cost Management can group and filter spend by tag — which is exactly how you allocate a shared subscription's cost to departments, projects or environments. Why not the others: an RBAC Reader role controls who can view something, not how cost is categorized. Azure Policy governs what resources may exist (and can even require a tag to be present), but it does not itself carve up a bill. Budgets set spending thresholds; they do not attribute existing charges to a department. Pro tip: whenever a question is about splitting or attributing cost, the answer almost always involves tags.

AZ-900 Question 3 of 7

A student signs up for a Microsoft Azure free account and worries about a surprise charge once the starting credit is used up. By default, what happens to that account, and does a pay-as-you-go subscription get the same protection?

Answer: A — The free account has a spending limit that disables paid resources when the credit runs out; a pay-as-you-go subscription has no spending limit.

A spending limit is a feature of credit-based subscriptions (the free account and similar): when the included credit is exhausted, paid services are disabled for the rest of the billing period so you are not charged. Pay-as-you-go has no spending limit — it is designed to keep running and bill you for what you use. Why not the others: the two claims that both or neither have a limit get the distinction backwards; the claim that the free account keeps billing like pay-as-you-go describes the opposite of how the spending limit protects you. Pro tip: spending limit = credit subscriptions only; on pay-as-you-go, a Budget is your early-warning tool, not a hard stop.

AZ-900 Question 4 of 7

Azure offers Reservations, Savings plans for compute, and Azure Hybrid Benefit as ways to lower cost. Which statement correctly describes what each one does?

Answer: A — A Reservation commits to a specific resource for 1 or 3 years for a discount; a Savings plan commits to a fixed hourly compute spend for flexibility across resource types; Azure Hybrid Benefit reuses existing on-premises Windows Server or SQL Server licenses.

These are three separate discount mechanisms, and the exam likes to swap their definitions. A Reservation is a 1- or 3-year commitment to a specific resource (such as a VM size in a region) in exchange for a lower rate. A Savings plan for compute commits you to a steady hourly dollar amount of compute and applies the discount flexibly across eligible services. Azure Hybrid Benefit is a licensing benefit — you bring existing Windows Server or SQL Server licenses (with Software Assurance) to cut the rate. Why not the others: they either flatten all three into one rule, scramble the definitions, or confuse these commitment-based discounts with the free planning calculators. Pro tip: Reservation = commit to a resource, Savings plan = commit to an hourly spend, Hybrid Benefit = bring your own license.

AZ-900 Question 5 of 7

Azure Advisor reports that a virtual machine has sat almost idle for weeks and recommends resizing or deallocating it. Under which Advisor category does this recommendation fall, and what is the point of it?

Answer: A — Cost — Advisor identifies idle or underused resources and suggests right-sizing or shutting them down to reduce spend.

Azure Advisor groups its recommendations into categories — reliability, security, performance, cost, and operational excellence. Spotting an idle or oversized VM and advising you to resize or deallocate it is a classic Cost recommendation aimed at cutting waste. Why not the others: reliability is about resilience and uptime, security is about hardening and posture, and performance is about speed and responsiveness — none of which is the goal when the advice is to trim an underused resource. Pro tip: 'idle,' 'underutilized,' or 'right-size' in a stem points straight at Advisor's Cost category.

AZ-900 Question 6 of 7

An organization with several Microsoft Azure subscriptions needs to download the official PDF invoice and see charges rolled up for the whole account, not just one subscription. In Cost Management + Billing, at which scope do they do this?

Answer: A — The billing account scope, which aggregates charges and issues the invoice across its subscriptions.

Cost Management works at different scopes — resource group, subscription, and billing account — and invoices are produced at the billing account scope, where charges across the underlying subscriptions are aggregated. That is where you download the PDF invoice. Why not the others: a single resource group's cost view is far too narrow to represent the whole account's invoice; the Pricing Calculator estimates future deployments and issues no invoices at all; a resource's metrics blade shows telemetry, not billing documents. Pro tip: think of the scope ladder — resource group, subscription, billing account — and remember invoices live at the top, the billing account.

AZ-900 Question 7 of 7

During AZ-900 study, a candidate wants to know exactly what an Azure free account includes. Which description is accurate?

Answer: A — A time-limited credit to spend in the first 30 days, 12 months of selected popular services free, and a set of always-free services that never expire.

An Azure free account bundles three things: a starting credit to use within the first 30 days, a group of popular services free for 12 months, and a set of always-free services that remain free beyond the first year. Why not the others: nothing about the free account makes every service free, either for a year or permanently, and it is not just a 30-day credit — the 12-month and always-free tiers persist past the first month. Pro tip: remember the free account as three buckets — short-term credit, 12-month services, and always-free services.

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Frequently asked questions

What is the difference between Azure Cost Management and the Pricing Calculator?

They sit on opposite sides of the build. The Pricing Calculator estimates what a deployment will cost before you create anything — a planning tool for hypothetical resources. Azure Cost Management tracks, analyzes and controls what you are actually spending on resources that are already running, and its Budgets feature alerts you when real or forecast cost crosses a threshold. In short: Pricing Calculator estimates the future, Cost Management reports and governs the present.

Do pay-as-you-go Azure accounts have a spending limit?

No. The spending limit is a feature of credit-based subscriptions such as the Azure free account, where paid services are disabled once the included credit is used up so you are not charged. Pay-as-you-go has no spending limit — it is meant to keep running and bill you for usage. To get an early warning on a pay-as-you-go subscription, set a Budget in Cost Management; it notifies you at your chosen thresholds but does not automatically stop resources.

Are these real AZ-900 exam questions?

No. They are our own questions, written in the style and difficulty of the AZ-900 — never copied from any question bank or the live exam. Reproducing real exam items violates Microsoft's certification agreement and can cost a candidate their certification, and a crammed answer teaches you nothing about the variant you have not seen. The value here is the reasoning in each explanation.

Updated for AZ-900 (July 2026). The sample questions above are our own work in the style of the exam — not real exam items. The exam itself is set and marked by the certification body.