Azure Fundamentals (AZ-900) — Cloud Concepts and Architecture flashcards
10 of 80 cards free to study here · 2 topics · the whole deck is built into Willys
Shared responsibility, cloud models and service types, cloud benefits, then Azure regions, zones and the resource hierarchy, compute and networking, storage redundancy and tiers, migration tools, and identity and security with Microsoft Entra ID.
Learn deck · part of Microsoft Azure Fundamentals (AZ-900) · written against: AZ-900 skills measured (current study guide). Updated 2026-10-10.
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In the cloud shared responsibility model, which three things does the customer always own, whatever the service type?The information and data, the devices that connect (phones and PCs), and the accounts and identities.Cloud Concepts › Cloud Computing
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In the cloud shared responsibility model, which three things does the cloud provider always own?The physical datacenter, the physical network and the physical hosts.Cloud Concepts › Cloud Computing
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How does the customer's share of responsibility change from IaaS to PaaS to SaaS?It shrinks at each step: with IaaS you manage the OS, middleware and apps; with PaaS the provider runs the OS and platform; with SaaS the provider runs the whole application.Cloud Concepts › Cloud Computing
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What is a private cloud, and who is responsible for it?Cloud resources used by a single organization, in its own datacenter or a hosted one; the organization is responsible for buying and maintaining the hardware and services.Cloud Concepts › Cloud Computing
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A company keeps a sensitive legacy system on premises but runs its web front end in Azure, with the two connected. Which cloud model is this?Hybrid cloud — public and private environments working together, letting the organization decide where each workload runs.Cloud Concepts › Cloud Computing
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What does pairing two Azure regions provide?Planned updates roll out to one region of the pair at a time, and in a broad outage one region of each pair is prioritized for recovery; the regions are usually far apart within the same geography.Azure Architecture and Services › Core Architectural Components
Watch out: not every region has a pair. -
What are Azure sovereign regions, with two examples?Instances of Azure isolated from the main cloud for legal or compliance reasons — Azure Government for US government agencies, and Azure in China, operated by 21Vianet.Azure Architecture and Services › Core Architectural Components
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What is an Azure availability zone?A physically separate datacenter or group of datacenters within a region, with independent power, cooling and networking; enabled regions have at least three zones.Azure Architecture and Services › Core Architectural Components
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What is the difference between a zonal service and a zone-redundant service?A zonal service is pinned to one zone you choose, such as a VM; a zone-redundant service is replicated across zones automatically, such as zone-redundant storage.Azure Architecture and Services › Core Architectural Components
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A project's resources must all be deleted when the project ends. How can resource groups help, and what is the risk?Put the project's resources in one resource group and delete the group — every resource inside it is deleted too, so group carefully.Azure Architecture and Services › Core Architectural Components
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About these cards
Review status: Second-reader reviewed, with corrections applied.
Checked against:
- Checked against the Microsoft Azure Fundamentals (AZ-900) skills outline, cloud concepts and Azure architecture and services sections (topic outline only; no text copied).
- Checked against Microsoft Learn documentation for Azure regions and availability zones, compute, networking, Azure Storage redundancy and access tiers, Microsoft Entra ID and Microsoft Defender for Cloud (reference only; no sentences reproduced).
- Checked against the Microsoft Learn Azure Fundamentals training modules (reference only; no sentences reproduced).
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