April 22, 2025
From rehosting to retiring legacy systems, discover the 6 Rs of cloud migration, a strategic approach that businesses can leverage to maximize the benefits of the cloud.

In today’s rapidly evolving digital landscape, businesses are increasingly turning to cloud migration to enhance agility, reduce costs, and unlock new possibilities for growth. However, embarking on a successful cloud migration journey requires a strategic approach. The 6 R’s framework—Rehost, Refactor, Revise, Rebuild, Replace, and Retire—provides a comprehensive roadmap for businesses seeking to navigate the complexities of cloud migration. All trusted cloud service solutions follow this framework to help embark on a digital transformation journey.

The 6 R’s Framework Explained  

The 6 R’s framework is a strategic approach to cloud migration, offering businesses a structured methodology for transitioning their applications and systems to the cloud. This framework provides businesses with a comprehensive set of strategies, allowing them to tailor their cloud migration approach based on each application or system’s unique characteristics and requirements. Each “R” represents a distinct strategy: 

 1. Rehost: Elevating Your Infrastructure 

The first step in cloud migration is often rehosting, also known as “lift and shift.” This involves moving existing applications and data to the cloud without significantly changing their architecture. Rehosting offers a quick and straightforward path to the cloud, minimizing downtime and operational disruptions. 

2. Refactor: Optimizing for the Cloud Environment 

Refactoring, or rearchitecting, involves making specific modifications to applications to better align them with cloud-native architecture. This step aims to optimize performance, scalability, and efficiency in the cloud environment. By leveraging cloud-native features, businesses can enhance application responsiveness and reduce overall operational costs. 

3. Revise: Enhancing Functionality 

The revised approach involves making selective application enhancements to better leverage cloud capabilities. This may include integrating new features, improving user interfaces, or enhancing overall functionality. The goal is to ensure that applications function seamlessly in the cloud and take full advantage of the innovative features offered by cloud platforms. 

4. Rebuild: Building from the Ground Up 

For applications that require a more radical transformation, the rebuild approach involves completely rearchitecting and rewriting them using cloud-native technologies. This approach allows businesses to harness the full potential of the cloud, taking advantage of features like serverless computing, microservices architecture, and containerization for improved scalability and flexibility. 

5. Replace: Adopting New Solutions 

In some cases, replacing existing applications with off-the-shelf, cloud-based solutions may be more beneficial. This approach can provide immediate access to advanced features and functionalities while reducing the burden of maintaining custom applications. Choosing the right replacement solutions is crucial to aligning with business goals and ensuring a smooth transition. 

6. Retire: Streamlining Legacy Systems 

As businesses evolve, legacy systems and applications may become obsolete or redundant. The retirement approach involves identifying and decommissioning such legacy components to streamline operations. By eliminating unnecessary systems, businesses can reduce complexity, enhance security, and allocate resources more efficiently. 

Crafting a Successful Cloud Migration Strategy 

To ensure a successful cloud migration, businesses must carefully evaluate their applications and systems, considering factors such as complexity, dependencies, and business priorities. A well-crafted strategy should include a mix of the 6 R’s based on the unique requirements of each application.