Why This Cheat Sheet Matters for AZ-900
This cheat sheet covers the most important Azure Cost Management concepts tested on the AZ-900 (Azure Fundamentals) certification exam. It contains 3 sections with 13 key points that you should memorize before exam day. Learn about Azure pricing calculator, TCO calculator, Cost Management + Billing, Azure reservations, and service level agreements. Use this as a quick-reference guide during your final review sessions.
Pricing Tools
- Pricing Calculator: estimate costs for Azure services before deploying.
- TCO Calculator: compare on-premises costs with Azure cloud costs.
- Cost Management + Billing: monitor, allocate, and optimize cloud spending.
- Azure Advisor: provides cost recommendations based on your usage.
Cost Factors
- Resource type, usage quantity, and region affect pricing.
- Bandwidth: inbound data is free; outbound data is charged.
- Reserved Instances and Savings Plans reduce costs with commitment.
- Azure Hybrid Benefit lets you reuse on-premises licenses.
- Dev/Test pricing offers discounts for non-production workloads.
SLAs
- SLAs define uptime commitments as percentages (e.g., 99.9%).
- Composite SLA = multiply individual SLAs of dependent services.
- Higher redundancy increases composite SLA but adds cost.
- Preview services do not have SLA guarantees.
Practice Cost Management Questions
Put your knowledge to the test with practice questions.
Azure Quick Reference Tips
Azure services follow consistent naming patterns that help with exam recall. Resource Manager (ARM) templates use JSON, while Bicep provides a cleaner DSL for infrastructure as code. Remember that Azure resources are organised in a hierarchy: Management Groups → Subscriptions → Resource Groups → Resources.