Western Governors University

D303: Azure Fundamentals

A study guide to WGU's D303, the cloud computing course on core Microsoft Azure concepts, where competency is shown by passing the AZ-900 exam.

Updated October 2026 · 5 min read

D303 Azure Fundamentals is the Western Governors University course that introduces Microsoft Azure: what the cloud is, the main Azure services, and how security, governance and costs work.

WGU's program guide for the B.S. Cloud Computing (Azure track) lists it at three competency units with no prerequisites, and says competency is demonstrated by passing the Microsoft Azure Fundamentals certification exam (AZ-900). It is aimed at students who are new to cloud solutions or to Azure.

The exam is broad rather than deep, which is exactly what catches people out. You need to recognize the right service or concept from a short scenario across many topic areas.

Course at a Glance

ItemDetails
UniversityWestern Governors University (WGU)
Course codeD303
LevelUndergraduate
Competency units3
PrerequisitesNone listed
AssessmentMicrosoft Azure Fundamentals (AZ-900) certification exam

What D303 Covers

The program guide lists six competencies, which track the main areas of the AZ-900 exam:

Competency (summarized)Plain-language meaning
Describe cloud computing and service categoriesIaaS, PaaS, SaaS; public, private and hybrid cloud
Describe core Azure servicesCompute, networking, storage and databases
Explain core solutions and management toolsPortal, CLI, PowerShell, monitoring and advisory tools
Define protective measures and network securityNetwork security groups, firewalls, DDoS protection
Configure groups and identitiesMicrosoft Entra ID (formerly Azure AD), access control
Describe cost management and service lifecyclesPricing factors, cost tools, SLAs, preview and general availability

Key Concepts Explained

The Shared Responsibility Model

In the cloud, security duties are split between Microsoft and the customer, and the split shifts with the service type. The more the provider manages, the less you do, but data and identities always remain your responsibility.

Example: A company runs a database on an Azure virtual machine (IaaS). It must patch the operating system and database software itself. If it moves to Azure SQL Database (PaaS), Microsoft handles OS and database engine patching, but the company still controls who can access the data and how it is classified.

Regions, Availability Zones and SLAs

Azure regions are geographic areas containing data centers; availability zones are separate locations within a region. Spreading resources across zones raises availability, and Microsoft's SLAs state the uptime commitment for each service configuration.

Consumption-Based Pricing

You pay for what you use, and costs depend on factors such as resource type, region, usage and data leaving Azure. The pricing calculator estimates costs before deployment; cost management tools track them afterwards.

How Competency Is Assessed

Unlike most courses, D303 is not passed with an essay or performance task. The program guide states that competency is demonstrated by successfully completing the AZ-900 exam. Microsoft updates exam objectives from time to time, so check the current skills outline on Microsoft Learn alongside your course materials.

Preparation activityWhat it buildsHow to use it
Course materials and Microsoft Learn modulesCore knowledgeWork through every objective area, not just favorites
Hands-on practice in an Azure accountRecognition of real servicesCreate and delete simple resources to see how they fit
Practice questionsExam-style recallReview why each wrong option is wrong
Concept comparisonsTelling similar services apartBuild tables such as VM vs App Service vs Functions

Where Students Get Stuck

Study Tips for D303

How We Help with D303

Tell us which objective areas you find difficult and share any practice results. A tutor with cloud experience can explain Azure concepts in plain language, prepare comparison notes and practice explanations, and help you plan your revision.

GradeEssays is independent of Western Governors University and Microsoft. We offer tutoring and study materials only: we never sit exams, access exam content or log in to your course or certification accounts, and we cannot promise a pass. Revisions to study materials within the original scope are free.

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Frequently Asked Questions

How is D303 assessed?

WGU's program guide states that competency is demonstrated by successfully completing the Microsoft Azure Fundamentals (AZ-900) certification exam.

Does D303 have prerequisites?

The program guide lists no prerequisites, and describes the course as intended for students new to cloud solutions or to Azure.

Do I need hands-on Azure experience?

It is not strictly required for a fundamentals exam, but trying services in the portal makes the concepts much easier to remember.

Which course builds on D303?

In the Azure track, later courses such as Azure administration and architecture build on these fundamentals. Check your degree plan for the exact sequence.

Is AZ-900 hard?

It is broad and conceptual. Most difficulty comes from distinguishing similar services and governance tools, which careful study can address.

Can you take the AZ-900 exam for me?

No. We provide tutoring and study notes only; exams must be taken by you under the provider's rules.