L12. Azure Cost Management: Pricing Models and the Pricing Calculator
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Understanding Azure pricing is a key AZ-900 domain. This lesson covers pricing factors, the Pricing Calculator, TCO Calculator, reservations, and Azure Cost Management tools.
Factors That Affect Azure Costs
Azure pricing varies based on multiple factors:
- Resource type: a VM costs more than a DNS zone; database tiers vary widely
- Consumption: pay-as-you-go vs. reserved capacity
- Region: prices differ across Azure regions
- Bandwidth: inbound data transfer to Azure is free; outbound (egress) data transfer is charged
- Subscription type: Dev/Test subscriptions have discounts; Enterprise Agreements offer volume pricing
Azure Pricing Calculator
The Azure Pricing Calculator (azure.microsoft.com/pricing/calculator) estimates the monthly cost of Azure services before you deploy them. Use the Pricing Calculator when: planning a new deployment and you need a cost estimate to include in a business case or budget.
Total Cost of Ownership (TCO) Calculator
The TCO Calculator estimates the cost savings of migrating on-premises workloads to Azure compared to keeping them on-premises. Use the TCO Calculator when: justifying a cloud migration to stakeholders by showing potential savings vs. on-premises costs.
Azure Cost Management and Billing
A free tool within the Azure portal for monitoring, analyzing, and optimizing Azure spending. Key features:
- Cost analysis: visualize spending by resource, resource group, or subscription
- Budgets: set spending alerts that notify you when thresholds are reached
- Recommendations: Advisor-generated cost optimization suggestions
Ways to Reduce Azure Costs
Azure Reservations: commit to 1 or 3 years for specific resources (VMs, SQL, Cosmos DB) and save up to 72% vs. pay-as-you-go. Azure Hybrid Benefit: use existing Windows Server or SQL Server licenses with Software Assurance on Azure VMs, saving up to 40%. Spot VMs: use excess Azure capacity at up to 90% discount; Azure can evict spot VMs when it needs the capacity back. Right-sizing: use Azure Advisor recommendations to find over-provisioned resources. Auto-shutdown: schedule VMs to shut down outside business hours for development environments.| Tool | Purpose |
|---|---|
| Pricing Calculator | Estimate costs before deployment |
| TCO Calculator | Justify migration with on-prem cost comparison |
| Cost Management | Monitor and analyze actual spending |
| Azure Advisor | Recommendations for cost optimization |
- ✓Inbound data transfer to Azure is free; outbound (egress) data transfer is charged
- ✓Pricing Calculator estimates future costs before deployment; TCO Calculator compares cloud vs on-premises costs
- ✓Azure Reservations offer up to 72% savings vs pay-as-you-go with 1 or 3-year commitments
- ✓Azure Hybrid Benefit lets you reuse existing Windows Server and SQL Server licenses on Azure VMs
- ✓Spot VMs use excess capacity at up to 90% discount but can be evicted by Azure at any time
1. A manager needs to present a business case comparing the cost of keeping 50 on-premises servers vs. migrating them to Azure. Which Azure tool is most appropriate?
2. A company runs production VMs that need to operate 24/7 for at least 3 years. Which pricing option provides the greatest cost savings?
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This free course covers the theory. Pluralsight adds guided video paths, hands-on Azure labs, and timed practice exams to help you pass AZ-900 with confidence.