AZ-900 cheat sheet

Exam at a glance

Domain weightings

How much of the exam each domain covers. Spend your study time in proportion — the heavier the domain, the more questions you'll see.

Key terms

Azure Region

An Azure Region is a geographical area containing one or more datacenters that are networked together with a low-latency network. Regions provide customers with flexibility to deploy applications and data in specific locations to meet data residency, compliance, and latency requirements.

Resource Group

A Resource Group is a logical container for resources deployed on Azure. It holds related resources for an Azure solution, allowing management, monitoring, access control, and billing to be organized and applied as a group rather than individually.

Azure Active Directory

Azure Active Directory (Azure AD) is Microsoft's cloud-based identity and access management service. It enables employees to sign in and access resources including Microsoft 365, the Azure portal, and thousands of other SaaS applications while providing features like multi-factor authentication and conditional access.

Virtual Machine

An Azure Virtual Machine (VM) is an on-demand, scalable computing resource providing the flexibility of virtualization without buying and maintaining physical hardware. VMs can run Windows or Linux and support various workloads including development, testing, and production deployments.

Blob Storage

Azure Blob Storage is Microsoft's object storage solution optimized for storing massive amounts of unstructured data. Blobs can be accessed from anywhere via HTTP or HTTPS and support three types of blobs: block blobs for text and binary data, append blobs for logging, and page blobs for virtual hard disk files.

Azure Functions

Azure Functions is a serverless compute service enabling execution of code triggered by events without managing infrastructure. Functions automatically scale based on demand and charge only for the compute time consumed, ideal for event-driven scenarios and microservices architectures.

Virtual Network

Azure Virtual Network (VNet) is a representation of a network in the cloud providing isolation, segmentation, and communication capabilities for Azure resources. VNets enable Azure resources to securely communicate with each other, the internet, and on-premises networks through VPN gateways or ExpressRoute.

Azure Monitor

Azure Monitor is a comprehensive monitoring solution collecting, analyzing, and acting on telemetry from cloud and on-premises environments. It maximizes availability and performance of applications by proactively identifying issues and providing insights through metrics, logs, and distributed tracing.

SLA

A Service Level Agreement (SLA) is Microsoft's commitment defining performance standards and availability guarantees for Azure services. SLAs specify uptime percentages, response times, and service credits provided when commitments are not met, helping customers plan for business continuity.

Azure SQL Database

Azure SQL Database is a fully managed relational database service based on the latest stable version of Microsoft SQL Server. It handles database management functions including upgrading, patching, backups, and monitoring without user intervention, offering built-in high availability and intelligent performance optimization.