AWS Migration

Question 1

What are the advantages of migrating to the AWS Cloud? 5

Answer 1

Flexibility: With a wide range of services and configurations, AWS provides the flexibility to choose the right tools and infrastructure to meet specific application requirements.

Security: AWS prioritizes security and compliance, providing a comprehensive set of tools, features, and best practices to protect data and applications. AWS complies with numerous industry standards and offers advanced security services.

Scalability: AWS offers scalable resources that can be easily adjusted to match business demands, allowing for efficient utilization and cost optimization.

Reliability and Availability: AWS provides a robust and globally distributed infrastructure, offering high availability, fault tolerance, and built-in disaster recovery options.

Cost-effectiveness: AWS offers a pay-as-you-go pricing model, eliminating the need for large upfront investments. Additionally, the ability to scale resources up or down helps optimize costs.

Question 2

A well-defined migration plan aims to address what three issues?

Answer 2

Mitigate risks
Provide a systematic approach, and
Enables effective communication and coordination.

Question 3

What does a well defined migration plan outline? 4

Answer 3

A well-defined migration plan outlines the
Steps,
Timelines,
Dependencies, and
Resources required for a successful migration.

Question 4

What is the AWS Server Migration Service (SMS)?

Answer 4

AWS SMS is a service that simplifies the migration of on-premises virtual machines (VMs) to the AWS Cloud by automating the replication and orchestration of VMs.

Question 5

How would you assess the readiness of an on-premises environment for migration to AWS? 5

Answer 5

Evaluate the
Application dependencies
Data transfer requirements
Security and compliance needs
Network connectivity, and
Infrastructure compatibility with AWS services.

Question 6

What are the different migration strategies for on-premises to AWS Cloud migrations? 4 R’s

Answer 6

Common migration strategies include
Rehosting (lift and shift),
Re-platforming (lift, tinker, and shift),
Refactoring,
Retiring

Question 7

Can you explain the rehosting (lift and shift) migration strategy?

Answer 7

Rehosting involves migrating applications from on-premises to AWS Cloud without making significant changes to their architecture or functionality, essentially replicating the existing infrastructure in the cloud.

Typically by replicating VMs and running them on EC2 instances.

Question 8

Can you explain the Re-platforming (lift, tinker, and shift) migration strategy?

Answer 8

Takes advantage of cloud-native services or features to improve performance, scalability, or cost-effectiveness.

For example, you might migrate an application from a self-managed database server to Amazon RDS

Question 9

Can you explain the Refactoring, migration strategy?

Answer 9

Refactoring, also known as re-architecting, involves making significant modifications to the application architecture or codebase during the migration process.

Question 10

Refactoring takes a substantial effort. What is the benefit of going this route?

Answer 10

The goal is to optimize the application for cloud-native capabilities and to take advantage of managed services, scalability, and other benefits offered by the AWS Cloud.

Question 11

Can you explain the Retiring/re-architecting migration strategy?

Answer 11

This strategy involves identifying legacy systems, redundant applications, or obsolete functionalities and either retiring them or redesigning them to fit the cloud-native paradigm.

Question 12

What a major benefit of Retiring Migration strategy?

Answer 12

It helps streamline the migration process and optimize costs by eliminating unnecessary components.

Question 13

What three AWS services help you handle the data migration process from on-premises to AWS? 3

Answer 13

• AWS Snowball devices for large-scale offline transfers
• AWS Database Migration Service (DMS)
• Direct network connectivity options like AWS Direct Connect or VPN

Question 14

What is the AWS Database Migration Service (DMS)?

Answer 14

The AWS Database Migration Service (DMS) is a fully managed service that allows seamless and secure migration of databases to AWS.

Question 15

How does AWS DMS minimize downtime during transfer?

Answer 15

AWS DMS captures changes from the source database and applies them to the target database, ensuring minimal downtime during the migration process.

Question 16

Can AWS DMS be used for both homogeneous and heterogeneous database migrations?

Answer 16

Yes, AWS DMS can be used for both homogeneous migrations (e.g., migrating a MySQL database to another MySQL database) and heterogeneous migrations (e.g., migrating an Oracle database to an Amazon RDS for PostgreSQL instance).

Question 17

What are some use cases for AWS DMS?

Answer 17

AWS DMS can be used for various scenarios, including database migration to AWS, database replication for high availability, and data integration for real-time analytics.

Question 18

What security considerations should be taken into account during a migration to AWS? 4

Answer 18

Identity and access management
Encryption of data at rest and in transit
Network security
AWS security best practices & compliance requirements.

Question 19

How would you handle application dependencies during a migration? 3

Answer 19

Using techniques like:
Dependency mapping
Utilizing AWS Application Discovery Service
Performing testing & validation to ensure a smooth migration.

Question 20

What metrics are you monitoring during the post-migration of applications to the cloud? 4

Answer 20

Functionality
Performance
Security
Data integrity.

Question 21

During post-migration validation and testing what should be in place? 3

Answer 21

Test plans
Test cases and a
Rollback strategy

Question 22

Can you discuss some AWS services that are specifically designed to facilitate application migration to AWS? 4

Answer 22

AWS Server Migration Service (SMS)
AWS Database Migration Service (DMS)
AWS Application Discovery Service
AWS CloudEndure