Question

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

A retail company plans to migrate its on-premises relational database to AWS. The database currently runs on a self-managed physical server. To reduce operational overhead such as backups and patching, the company decides to migrate the database to Amazon RDS without modifying the database engine or making changes to the application code. Which cloud migration strategy is this company employing?

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

Answer

Replatforming is the correct migration strategy because it involves migrating the database to a managed service to reduce operational tasks without changing the database engine or the core application code.
Replatforming is the correct strategy because the company is moving their database to a managed platform (Amazon RDS) to reduce administrative overhead, but they are retaining the same database engine and code, making minimal modifications without re-architecting the application.

Step-by-Step Solution

1
Analyze the company's objective.
The company wants to move a database to AWS, reduce management overhead (patching, backups), and keep the database engine and application code the same.
This establishes the scope of changes: some optimization (using a managed service) is done, but the core architecture remains unchanged.
2
Map the scenario to the 6 Rs migration strategies.
Moving a self-managed database to a fully managed platform (Amazon RDS) without core code modification is known as Replatforming.
This strategy allows the organization to benefit from cloud-managed infrastructure without the cost or complexity of a full redesign.

Key Concept

Cloud Migration Strategies (Replatforming)
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