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

A genomic research institute, GenePulse, is migrating its legacy DNA sequencing analysis platform to AWS. The platform's application tier runs on legacy virtual machines, while its database tier uses a proprietary relational database that requires expensive licensing and intensive database administration. The institute wants to migrate to AWS to eliminate database licensing costs and minimize operational overhead, but it has strict timeline constraints that forbid modifying the application's core code or architecture. Which migration strategy should GenePulse adopt for this platform?

  1. A
    Rehosting
  2. ReplatformingAnswer
  3. C
    Refactoring
  4. D
    Repurchasing

Answer

Replatforming
Replatforming is the correct strategy because it allows the organization to achieve direct benefits (such as shifting from a self-managed database to a fully managed service to eliminate licensing fees and reduce admin overhead) without changing the core application logic or architecture.

Step-by-Step Solution

1
Identify the migration goals and constraints in the scenario.
The goals are to eliminate proprietary database licensing fees and reduce administration overhead. The key constraint is that the application's core code or architecture cannot be modified.
Understanding both what the customer wants to achieve and what they cannot change is required to select the correct migration strategy.
2
Compare the requirements against the characteristics of the migration strategies.
Rehosting is rejected because it keeps the proprietary database. Refactoring is rejected because it requires code changes. Repurchasing is rejected because the custom application is kept. Replatforming fits because shifting to a managed database service (e.g., Amazon RDS or Aurora) eliminates proprietary licenses and reduces administrative tasks without rewriting application code.
Evaluating each strategy ensures the selected option satisfies all operational goals while respecting the constraints.

Key Concept

AWS Cloud Migration Strategies (6 Rs)
Estimated Time:2m 0s
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Topics

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

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