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

NovaHealth Solutions is migrating its legacy application portfolio to the AWS Cloud. During the assessment phase, the IT team identifies a highly customized mainframe billing application that has tight dependencies on local mainframe hardware. Because a modern replacement is not available and rewriting the application is not currently feasible, the company decides to keep this workload running on-premises in its current state. Which cloud migration strategy is NovaHealth Solutions using for this specific application?

  1. RetainingAnswer
  2. B
    Retiring
  3. C
    Rehosting
  4. D
    Refactoring

Answer

Retaining
The correct answer is Retaining. The Retaining strategy involves keeping workloads in their source environment (on-premises) when there is no clear business case or technical feasibility to migrate them immediately.

Step-by-Step Solution

1
Analyze the migration scenario and identify the decision made for the mainframe billing application.
The application has tight hardware dependencies, cannot be easily rewritten, and the company decides to keep it on-premises in its current state.
Identifying the target state of the workload helps map it to the correct migration strategy.
2
Match the decision to keep the application on-premises to one of the 6 Rs migration strategies.
The decision to keep the workload in its current environment without moving it to the cloud is defined as the Retaining (re-visit) strategy.
This aligns with the AWS definition of Retaining, where workloads are kept on-premises for now.

Key Concept

Retaining migration strategy
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Topics

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

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