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Microsoft AZ-900 Exam
Microsoft Azure Fundamentals (Page 18 )

Updated On: 12-Jan-2026
Page 18 of 96
PDF with 473 Questions

You have an accounting application named App1 that uses a legacy database.
You plan to move App1 to the cloud.
Which service model should you use?

  1. platform as a service (PaaS)
  2. infrastructure as a service (IaaS)
  3. software as a service (SaaS)

Answer(s): B

Explanation:

Cloud Infrastructure-based Applications – It moves your existing on-premises apps to the Infrastructure as a Service (IaaS) platform or re-hosts them. “Lift & Shift” is a common term for this type of relocation. The programs will be nearly identical to what they were before, but they will now be able to run on cloud VMs.


Reference:

https://techtaalk.com/microsoft-azure-for-legacy-application-modernization/



HOTSPOT (Drag and Drop is not supported)
Select the answer that correctly completes the sentence.

  1. See Explanation section for answer.

Answer(s): A

Explanation:



Box: hybrid
You can deploy hybrid app with on-premises data that scales cross-cloud.


Reference:

https://docs.microsoft.com/en-us/azure/architecture/hybrid/deployments/solution-deployment-guide-cross-cloud-scaling-onprem-data



HOTSPOT (Drag and Drop is not supported)
Select the answer that correctly completes the sentence.

  1. See Explanation section for answer.

Answer(s): A

Explanation:




Box: Platform as a service (PaaS)
Platform as a service (PaaS) is a complete development and deployment environment in the cloud, with resources that enable you to deliver everything from simple cloud-based apps to sophisticated, cloud-enabled enterprise applications. You purchase the resources you need from a cloud service provider on a pay-as-you-go basis and access them over a secure Internet connection.

Like IaaS, PaaS includes infrastructure—servers, storage, and networking—but also middleware, development tools, business intelligence (BI) services, database management systems, and more.


Reference:

https://azure.microsoft.com/en-us/overview/what-is-paas/



Which cloud computing model includes on-premises and cloud-based resources?

  1. hybrid
  2. public
  3. private

Answer(s): A

Explanation:

A hybrid cloud — sometimes called a cloud hybrid — is a computing environment that combines an on-premises datacenter (also called a private cloud) with a public cloud, allowing data and applications to be shared between them. Some people define hybrid cloud to include “multicloud” configurations where an organization uses more than one public cloud in addition to their on-premises datacenter.


Reference:

https://azure.microsoft.com/en-us/overview/what-is-hybrid-cloud-computing/



HOTSPOT (Drag and Drop is not supported)
Select the answer that correctly completes the sentence.

  1. See Explanation section for answer.

Answer(s): A

Explanation:



An Azure virtual machine scale set can automatically increase or decrease the number of VM instances that run your application. This automated and elastic behavior reduces the management overhead to monitor and optimize the performance of your application.

Also: Azure elasticity as a service is referred to a cloud service that enables in automatically scaling Azure hosted resources in par with the demand and configured parameters. It provides Azure Administrators with the ability to auto scale Azure infrastructure and resources as and when needed.


Reference:

https://docs.microsoft.com/en-us/azure/virtual-machine-scale-sets/virtual-machine-scale-sets-autoscale-overview
https://www.netreo.com/cloud-automation/what-is-azure-elasticity-as-a-service/



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