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

A retail company, Nova Retail, is planning the migration of its legacy inventory database to the AWS Cloud. Currently, the database is hosted on-premises on a virtual machine, and the operations team spends substantial effort on operating system patching, backups, and storage provisioning. To reduce this administrative burden, Nova Retail decides to migrate the database to Amazon Relational Database Service (Amazon RDS) for Oracle, keeping the database engine and the application code unchanged. Which migration strategy is Nova Retail executing for this database?

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

Answer

Replatforming
The correct strategy is replatforming because the company is making a platform optimization—moving from a self-managed database to the fully managed Amazon RDS platform to reduce administrative tasks like patching and backups—while keeping the application code and database engine unchanged.

Step-by-Step Solution

1
Analyze the migration target and changes being made.
The target is Amazon RDS for Oracle, and the core application code and database engine remain unchanged.
Identifying the scope of changes helps distinguish between Rehost (no changes/EC2), Replatform (managed services/RDS), and Refactor (code changes).
2
Determine the cloud service model shift.
The database is moving from a self-managed environment (on-premises VM) to a fully managed service (Amazon RDS).
Moving to a managed service to reduce administrative tasks (like patching and backups) without changing the core application structure constitutes a platform optimization (tinkering).
3
Map the optimization to the 6 Rs migration strategies.
Since optimization is achieved by switching the platform to Amazon RDS without modifying application code, this is classified as Replatforming.
This matches the definition of Replatforming, which focuses on shifting to managed services to gain cloud benefits without re-architecting.

Key Concept

Identifying migration strategies (specifically Replatforming) when moving to managed services
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Topics

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

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