Match each Azure compute service to its characteristic.
Drag a concept onto its matching description — or click a concept then click the description.
IaaS with full control over OS and apps
PaaS for web apps, APIs, and mobile backends
Managed Kubernetes for container orchestration
Serverless compute for event-driven code
Simple, fast container deployment without orchestration
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Virtual Machines: Provides full control over the operating system and allows custom software installation.
Azure compute services range from IaaS (Virtual Machines) to PaaS (App Service) to serverless (Azure Functions) and container orchestration (AKS). Distractors confuse definitions of serverless and container orchestration, or PaaS and managed Kubernetes.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Virtual Machines: Provides full control over the operating system and allows custom software installation.
Why this is correct
Virtual Machines (VMs) provide Infrastructure-as-a-Service (IaaS), giving you complete administrative control over the guest operating system, including custom kernel modules, legacy dependencies, and arbitrary software installations. You are responsible for patch management, antivirus, and OS configuration, making VMs ideal for lifting and shifting existing workloads that require a specific OS version or stateful configuration.
App Service: Managed platform for building, deploying, and scaling web apps and APIs.
Why this is correct
App Service is a fully managed Platform-as-a-Service (PaaS) offering for hosting web applications, RESTful APIs, and mobile backends. It abstracts the underlying IIS/Windows or Linux runtime so you can focus on application code while Azure handles OS patching, built-in auto-scaling, load balancing, and deployment slots for staging and rollback—without managing virtual machines or infrastructure.
Azure Functions: Event-driven serverless compute for running code without managing infrastructure.
Why this is correct
Azure Functions is a serverless compute service that executes code in response to events such as HTTP requests, timer schedules, or messages arriving on Azure Queue Storage and Event Hubs. With the Consumption plan, you pay only for execution time and Azure dynamically scales out resources to handle incoming event rates, removing any need to provision or manage compute infrastructure.
Azure Functions: Managed container orchestration service for deploying and managing containerized applications.
Why it's wrong here
This statement is incorrect because Azure Functions is not a container orchestration service; that description belongs to Azure Kubernetes Service (AKS). While Functions can be containerized and run on Azure Container Apps, its core model is event-driven serverless functions, not deploying, scaling, and managing containerized microservices across a cluster.
Azure Kubernetes Service: Managed platform for building, deploying, and scaling web apps and APIs.
Why it's wrong here
This statement is incorrect because AKS does not provide a managed platform for web apps and APIs in the PaaS sense; it is a managed Kubernetes orchestration service for deploying containerized workloads. App Service is the Azure service that offers built-in web app hosting, auto-scaling, and CI/CD integration, whereas AKS gives you granular control over Kubernetes clusters, pods, and container networking without managing the control plane.
Quick reference
| Model | You Manage | Provider Manages | Examples |
|---|---|---|---|
| IaaS | OS, runtime, apps, data | Hardware, hypervisor, networking | EC2, Azure VMs, GCP Compute Engine |
| PaaS | Apps and data | OS, runtime, middleware, hardware | Elastic Beanstalk, Azure App Service |
| SaaS | Data and settings only | Everything else | Microsoft 365, Salesforce, Workday |
| FaaS / Serverless | Function code only | Infra, scaling, runtime | Lambda, Azure Functions, Cloud Run |
| CaaS | Containers and apps | Kubernetes, OS, hardware | EKS, AKS, GKE |
Go deeper
About these practice questions
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This AZ-305 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the AZ-305 exam.