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

An agricultural analytics firm, AgroOptima, is planning to migrate its application portfolio to the AWS Cloud. The migration team is evaluating the strategies for two specific workloads:

1. A predictive crop-yield analytics application that runs on on-premises virtual machines. To reduce database administration tasks, the team plans to move the application's database to Amazon RDS for PostgreSQL, while hosting the application itself on Amazon EC2 without modifying its core code.
2. A legacy invoicing system with high license maintenance costs. The company plans to decommission this system entirely and transition to a third-party Software-as-a-Service (SaaS) billing solution purchased through AWS Marketplace.

Which combination of migration strategies is AgroOptima using for these two workloads?

  1. A
    Rehosting for the analytics application and Repurchasing for the invoicing system
  2. Replatforming for the analytics application and Repurchasing for the invoicing systemAnswer
  3. C
    Replatforming for the analytics application and Retiring for the invoicing system
  4. D
    Refactoring for the analytics application and Rehosting for the invoicing system

Answer

Replatforming for the analytics application and Repurchasing for the invoicing system
The correct option is Replatforming for the analytics application and Repurchasing for the invoicing system. Shifting a self-managed database to a managed service like Amazon RDS during migration, while hosting the application itself on Amazon EC2 without code modifications, represents a Replatforming (lift-tinker-and-shift) strategy. Discarding a legacy system to adopt a new commercial Software-as-a-Service (SaaS) solution via AWS Marketplace represents a Repurchasing strategy.

Step-by-Step Solution

1
Analyze the migration strategy for the first workload (analytics application).
The database is shifted to Amazon RDS (a managed service) to reduce operational overhead, while the main application code remains unmodified on EC2.
This 'lift-tinker-and-shift' approach matches the Replatforming strategy.
2
Analyze the migration strategy for the second workload (invoicing system).
The legacy invoicing system is decommissioned and replaced with a commercial SaaS solution purchased via AWS Marketplace.
Transitioning to a different product/license model matches the Repurchasing strategy.
3
Combine the two identified strategies to find the matching option.
The combination is Replatforming and Repurchasing.
This corresponds to the correct option.

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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