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Difficulty: MediumUnderstand the benefits of and strategies for migration to the AWS Cloud

Aegis Insurance Group is preparing to migrate its legacy on-premises IT portfolio to the AWS Cloud. During the portfolio discovery phase, the migration team identifies two distinct systems:

- System 1: A core underwriting application that will be completely rewritten to utilize a cloud-native, serverless architecture with AWS Lambda and Amazon DynamoDB.
- System 2: An old, redundant testing environment that is no longer used by any business unit and has no regulatory data retention requirements.

Which of the following migration strategies represent the correct approach for these systems? (Select TWO.)

  1. Refactoring System 1 to transition to a serverless architectureAnswer
  2. Retiring System 2 since it is no longer requiredAnswer
  3. C
    Rehosting System 1 to migrate it to Amazon EC2 without modifications
  4. D
    Replatforming System 2 to run on Amazon ECS
  5. E
    Repurchasing System 1 by licensing a commercial-off-the-shelf software-as-a-service (SaaS) solution

Answer

The correct strategies are Refactoring for System 1 and Retiring for System 2.
Refactoring (or Re-architecting) is chosen when an application needs to be rebuilt from scratch to utilize cloud-native features, such as serverless compute and managed databases, which aligns with System 1. Retiring involves decommissioning applications and assets that are no longer useful or needed, which applies to the redundant test environment in System 2.

Step-by-Step Solution

1
Analyze the requirement for System 1.
System 1 is a core application being completely rewritten to use serverless services (AWS Lambda and Amazon DynamoDB) to achieve cloud-native scale. This architectural modification represents the Refactoring/Re-architecting strategy.
Identifying the correct strategy requires evaluating how much of the application architecture and code will be modified during migration.
2
Analyze the requirement for System 2.
System 2 is a redundant, unused testing environment with no compliance or data retention requirements. Decommissioning these assets represents the Retiring strategy.
Identifying assets that are no longer needed prevents unnecessary migration costs and efforts.
3
Select the correct combination of strategies.
The correct strategies are Refactoring for System 1 and Retiring for System 2.
These choices align with the 6 Rs framework definitions.

Key Concept

AWS Cloud Migration Strategies (6 Rs)
Estimated Time:1m 35s
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Topics

Understand the benefits of and strategies for migration to the AWS Cloud

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