The answer is Azure Migrate, as it is the single Azure-native service that provides both assessment and migration capabilities for on-premises VMs and physical servers, directly addressing the need to evaluate readiness and execute the move with minimal downtime. Azure Migrate discovers your environment, assesses compatibility and sizing for Azure, and then orchestrates the migration using replication technology that integrates seamlessly with Azure Site Recovery for ongoing disaster recovery replication. On the AZ-305 exam, this scenario tests your understanding of how Azure Migrate serves as a central hub for the entire migration lifecycle, while Azure Site Recovery is a complementary tool for replication only, not for initial assessment or migration. A common trap is choosing Azure Site Recovery alone, but it lacks the assessment phase; Azure Backup is for backup, not real-time replication, and Azure Database Migration Service is database-specific. Remember the mnemonic: “Migrate first, then replicate” — Azure Migrate handles the move, Site Recovery handles the recovery.
AZ-305 Design infrastructure solutions Practice Question
This AZ-305 practice question tests your understanding of design infrastructure solutions. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company is planning to migrate its on-premises data center to Azure. The company has 50 virtual machines (VMs) running Windows Server and Linux, along with several physical servers hosting legacy applications. The company wants to minimize administrative overhead and use Azure-native services as much as possible. The migration must be performed with minimal downtime and the company wants to assess the readiness of their on-premises environment. They also need to replicate data to Azure for disaster recovery. Which combination of Azure services should the company use to assess, migrate, and replicate?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "minimum / minimize"
Why it matters: Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Azure Migrate
Option A (Azure Migrate) provides assessment and migration capabilities for VMs and physical servers. Option B (Azure Site Recovery) provides replication for disaster recovery. Option C (Azure Backup) provides backup, not real-time replication. Option D (Azure Database Migration Service) is for databases only. The correct approach is to use Azure Migrate for assessment and migration, and Azure Site Recovery for disaster recovery replication. However, the question asks for a combination in a single answer. The best answer is Option A: Azure Migrate alone can perform assessment and migration, and it integrates with Azure Site Recovery for replication. But among the options, Option A is the most comprehensive. Option B is only for replication. Option C is for backup. Option D is for databases. So the correct answer is Azure Migrate.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Azure Backup
Why it's wrong here
Azure Backup provides backup, not real-time replication or migration.
✗
Azure Database Migration Service
Why it's wrong here
This service is only for database migrations, not for VMs or physical servers.
✓
Azure Migrate
Why this is correct
Azure Migrate provides assessment, migration, and integrates with Azure Site Recovery for replication, covering all requirements.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Static NAT maps one inside address to one outside address.
✗
Azure Site Recovery
Why it's wrong here
Azure Site Recovery provides replication but not assessment or migration of physical servers.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
Static NAT maps one inside address to one outside address.
PAT allows many inside hosts to share one public address using ports.
Inside local and inside global describe the private and translated addresses.
NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
→Identify inside and outside interfaces first.
→Check whether the scenario needs static NAT, dynamic NAT or PAT.
→Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
How this comes up in practice
An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this AZ-305 question in full detail.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related AZ-305 NAT questions on configuration and troubleshooting.
Design infrastructure solutions — This question tests Design infrastructure solutions — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Azure Migrate — Option A (Azure Migrate) provides assessment and migration capabilities for VMs and physical servers. Option B (Azure Site Recovery) provides replication for disaster recovery. Option C (Azure Backup) provides backup, not real-time replication. Option D (Azure Database Migration Service) is for databases only. The correct approach is to use Azure Migrate for assessment and migration, and Azure Site Recovery for disaster recovery replication. However, the question asks for a combination in a single answer. The best answer is Option A: Azure Migrate alone can perform assessment and migration, and it integrates with Azure Site Recovery for replication. But among the options, Option A is the most comprehensive. Option B is only for replication. Option C is for backup. Option D is for databases. So the correct answer is Azure Migrate.
What should I do if I get this AZ-305 question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related AZ-305 NAT questions on configuration and troubleshooting.
Are there clue words in this question I should notice?
Yes — watch for: "minimum / minimize". Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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