AZ-900 Cloud Migration &
Modernization Practice Test 2026–2027
| Azure Migration Strategies,
Modernization Questions & Detailed
Answers
1. An organization plans to move an on-premises application to Azure with
minimal code changes. The application currently runs on virtual machines
and depends on a specific operating system configuration. Which migration
strategy is most appropriate?
A. Refactor
B. Rebuild
C. Rehost
D. Retire
Answer: Rehost
Rationale: Rehosting, commonly called “lift and shift,” moves an existing
workload to Azure with minimal application modification. It is appropriate when
,the organization wants to migrate quickly while preserving the existing
architecture.
2. A company wants to migrate an application to Azure but also wants to
modify the application architecture to take advantage of managed
databases and platform services. Which approach best describes this
migration?
A. Rehost
B. Refactor
C. Retire
D. Retain
Answer: Refactor
Rationale: Refactoring involves modifying an application so that it can take
advantage of cloud-native capabilities while preserving much of the existing
application functionality.
3. An organization discovers that an old application is no longer required and
provides no business value. What should the organization do during cloud
migration planning?
A. Rehost the application
B. Refactor the application
C. Retire the application
D. Rebuild the application
Answer: Retire the application
Rationale: Retiring removes workloads that are unnecessary or no longer
provide sufficient business value, reducing migration cost and operational
overhead.
4. A company moves an application to Azure and replaces its self-managed
database with an Azure-managed database service. Which modernization
approach is being used?
,A. Retain
B. Refactor
C. Retire
D. Rehost
Answer: Refactor
Rationale: Replacing infrastructure components with managed Azure services
changes the application's implementation to benefit from cloud capabilities,
which is characteristic of refactoring.
5. A business wants to move a workload to Azure without changing its
architecture, application code, or operating system configuration. Which
strategy should it consider first?
A. Rehost
B. Refactor
C. Rebuild
D. Retire
Answer: Rehost
Rationale: Rehosting minimizes changes and is generally the fastest migration
strategy when an existing workload can operate successfully in an Azure-hosted
environment.
6. Which cloud migration strategy involves completely redesigning an
application using cloud-native technologies?
A. Rehost
B. Retain
C. Rebuild
D. Retire
Answer: Rebuild
, Rationale: Rebuilding creates the workload again using cloud-native
architecture and technologies rather than simply moving or incrementally
modifying the existing application.
7. A company decides that an application should remain on-premises because
regulatory requirements make migration impractical at this time. Which
migration decision applies?
A. Retire
B. Retain
C. Refactor
D. Rehost
Answer: Retain
Rationale: Retaining means keeping a workload in its current environment
because migration may not yet be appropriate due to technical, regulatory,
business, or financial considerations.
8. Which Azure service is commonly used to discover and assess on-premises
servers before migration?
A. Azure Migrate
B. Azure DNS
C. Azure Firewall
D. Azure DevOps
Answer: Azure Migrate
Rationale: Azure Migrate provides capabilities for discovering, assessing,
planning, and migrating workloads to Azure.
9. An administrator needs to evaluate on-premises servers to determine their
Azure readiness and estimate migration costs. Which capability is most
relevant?
A. Azure Migrate assessment
B. Azure Policy assignment
Modernization Practice Test 2026–2027
| Azure Migration Strategies,
Modernization Questions & Detailed
Answers
1. An organization plans to move an on-premises application to Azure with
minimal code changes. The application currently runs on virtual machines
and depends on a specific operating system configuration. Which migration
strategy is most appropriate?
A. Refactor
B. Rebuild
C. Rehost
D. Retire
Answer: Rehost
Rationale: Rehosting, commonly called “lift and shift,” moves an existing
workload to Azure with minimal application modification. It is appropriate when
,the organization wants to migrate quickly while preserving the existing
architecture.
2. A company wants to migrate an application to Azure but also wants to
modify the application architecture to take advantage of managed
databases and platform services. Which approach best describes this
migration?
A. Rehost
B. Refactor
C. Retire
D. Retain
Answer: Refactor
Rationale: Refactoring involves modifying an application so that it can take
advantage of cloud-native capabilities while preserving much of the existing
application functionality.
3. An organization discovers that an old application is no longer required and
provides no business value. What should the organization do during cloud
migration planning?
A. Rehost the application
B. Refactor the application
C. Retire the application
D. Rebuild the application
Answer: Retire the application
Rationale: Retiring removes workloads that are unnecessary or no longer
provide sufficient business value, reducing migration cost and operational
overhead.
4. A company moves an application to Azure and replaces its self-managed
database with an Azure-managed database service. Which modernization
approach is being used?
,A. Retain
B. Refactor
C. Retire
D. Rehost
Answer: Refactor
Rationale: Replacing infrastructure components with managed Azure services
changes the application's implementation to benefit from cloud capabilities,
which is characteristic of refactoring.
5. A business wants to move a workload to Azure without changing its
architecture, application code, or operating system configuration. Which
strategy should it consider first?
A. Rehost
B. Refactor
C. Rebuild
D. Retire
Answer: Rehost
Rationale: Rehosting minimizes changes and is generally the fastest migration
strategy when an existing workload can operate successfully in an Azure-hosted
environment.
6. Which cloud migration strategy involves completely redesigning an
application using cloud-native technologies?
A. Rehost
B. Retain
C. Rebuild
D. Retire
Answer: Rebuild
, Rationale: Rebuilding creates the workload again using cloud-native
architecture and technologies rather than simply moving or incrementally
modifying the existing application.
7. A company decides that an application should remain on-premises because
regulatory requirements make migration impractical at this time. Which
migration decision applies?
A. Retire
B. Retain
C. Refactor
D. Rehost
Answer: Retain
Rationale: Retaining means keeping a workload in its current environment
because migration may not yet be appropriate due to technical, regulatory,
business, or financial considerations.
8. Which Azure service is commonly used to discover and assess on-premises
servers before migration?
A. Azure Migrate
B. Azure DNS
C. Azure Firewall
D. Azure DevOps
Answer: Azure Migrate
Rationale: Azure Migrate provides capabilities for discovering, assessing,
planning, and migrating workloads to Azure.
9. An administrator needs to evaluate on-premises servers to determine their
Azure readiness and estimate migration costs. Which capability is most
relevant?
A. Azure Migrate assessment
B. Azure Policy assignment
