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Cloud Migration

In today’s digital age, businesses are increasingly embracing the power of the cloud to drive innovation, enhance operational efficiency, and stay competitive in the global marketplace. 

Cloud migration has become a pivotal strategy for organizations seeking to harness the benefits of cloud computing. However, the journey to the cloud can be a complex and challenging process. That’s where choosing the right migration strategy becomes essential.

This blog will delve into the 6Rs framework for cloud migration—a comprehensive approach that helps organizations make informed decisions and execute seamless cloud migrations. But before we dive into the details of the 6Rs, let’s first understand why organizations opt for cloud migration and its significance.

Why Organizations Opt for Cloud Migration

Let’s start off with the top reasons why businesses ought to consider migrating from in-house servers to cloud servers.


1. Cost Efficiency

One of the primary motivations behind cloud migration is cost efficiency. By moving to the cloud, organizations can significantly reduce capital expenditures on hardware and infrastructure. Cloud services operate on a pay-as-you-go model, allowing businesses to scale resources up or down based on their needs, ultimately leading to cost savings.

2. Improved Collaboration and Accessibility

Cloud-based collaboration tools and applications enable teams to work together seamlessly from anywhere in the world. This enhanced accessibility fosters collaboration and accelerates project timelines, improving overall productivity.

3. Enhanced Security and Compliance

Leading cloud providers invest heavily in security measures and compliance certifications. Migrating to the cloud can often result in improved data security and regulatory compliance, ensuring that sensitive information remains protected.

4. Scalability and Flexibility

Cloud services offer unparalleled scalability. Businesses can effortlessly adjust their resources to meet growing demands or unexpected spikes in traffic, ensuring that their applications run smoothly and efficiently.

5. Business Continuity and Disaster Recovery

Cloud-based disaster recovery solutions provide a safety net against data loss and system downtime. In the event of a disaster, organizations can quickly recover their data and applications, minimizing disruption to their operations.

A Step-by-Step Guide to Cloud Migration Strategy

Now that we’ve established the importance of cloud migration, let’s explore the step-by-step process of executing a successful migration:

1. Define Objectives and Goals

Begin by clearly defining your migration objectives and goals. Determine what you want to achieve with your cloud migration, whether it’s cost savings, improved performance, or enhanced scalability.

2. Assess Current Environment

Evaluate your existing IT infrastructure, applications, and data. Understanding your current state is crucial for making informed decisions throughout the migration process.

3. Choose the Right Cloud Model

Select the appropriate cloud deployment model—public, private, or hybrid—based on your organization’s needs and requirements.

4. Develop a Migration Team

Assemble a dedicated migration team with the skills and expertise necessary to plan, execute, and manage the migration effectively.

5. Conduct Risk Assessment

Identify potential risks and challenges that may arise during migration. Develop mitigation strategies to minimize disruptions.

6. Choose Your Migration Strategy

This is where the 6Rs framework comes into play. Each of these 6 Rs are individual cloud migration strategies. Here’s a quick overview of each of them.

  • Rehost (Lift and Shift)

This approach involves moving applications and data from on-premises infrastructure to the cloud without significant modifications. It’s a quick and cost-effective method for migrating legacy systems.

  • Refactor (Rebuild)

Refactoring involves redeveloping or rewriting applications to leverage cloud-native features. This approach can lead to improved performance and scalability.

  • Rearchitect (Redesign)

Rearchitecting involves redesigning applications to fully leverage cloud services. It allows for greater flexibility and optimization of resources.

  • Replatform (Repackage)

Replatforming entails making minor adjustments to applications for compatibility with cloud platforms. It’s a middle-ground approach between rehosting and refactoring.

  • Retire

Identify and decommission legacy applications and systems that are no longer needed, reducing operational costs.

  • Retain

Some applications and data may be better suited to remain on-premises due to regulatory or compliance requirements.

7. Create a Detailed Migration Plan

Develop a comprehensive migration plan that outlines the timeline, resources, and tasks involved in the migration process.

8. Establish Security and Compliance Protocols

Prioritize security and compliance by implementing the necessary measures to protect your data and applications in the cloud.

9. Migrate Your Apps and Data

Execute the migration according to your chosen strategy, closely monitoring the process for any issues.

10. Training and Skill Development

Ensure that your team receives the necessary training to effectively manage and operate cloud resources.

11. Monitoring and Optimization

Continuously monitor your cloud infrastructure and applications, optimizing them for cost-efficiency and performance.

12. Develop a Disaster Recovery and Backup Strategy

Plan for disaster recovery by implementing robust backup and recovery solutions to safeguard your data.

13. Validate and Improve Migration

Regularly assess your cloud environment to ensure it aligns with your objectives and make improvements as needed.

A Closer Look at the 6 Rs

Each of the 6 Rs offers a unique approach to cloud migration, allowing organizations to tailor their strategy based on their specific needs, objectives, and constraints. The choice of which R to use depends on factors such as the nature of the applications, budget considerations, and the desired long-term outcomes of the migration journey.

1. Rehost (Lift and Shift)

Rehosting, often referred to as “Lift and Shift,” is a migration strategy where organizations move their applications and data from their on-premises infrastructure to the cloud with minimal modifications. 

This approach is often chosen when organizations want to migrate quickly and at a lower cost, especially when dealing with legacy systems that may not be cloud-native.

Key Characteristics

  • Rehosting is one of the fastest ways to migrate to the cloud. It involves replicating existing server images or virtual machines in the cloud environment, which reduces the need for extensive code changes.
  • The primary goal is to replicate the existing environment in the cloud, so there’s minimal rewriting or redesigning of applications. This can save time and resources.
  • Rehosting is ideal for legacy systems that may not be easily refactored or rearchitected for the cloud. It allows these systems to take advantage of cloud infrastructure without a complete overhaul.


  • Organizations can start benefiting from cloud resources almost immediately since there’s minimal downtime during migration.
  • While not as cost-efficient as fully cloud-native approaches, rehosting can still lead to cost savings compared to maintaining on-premises infrastructure.
  • It’s a lower-risk strategy for organizations that are new to the cloud, as it doesn’t involve significant code changes.


2. Refactor (Rebuild)

Refactoring, also known as “Rebuilding,” involves redeveloping or rewriting applications to take full advantage of cloud-native features and capabilities. This approach is chosen when organizations seek improved performance, scalability, and long-term cost-efficiency in the cloud.

Key Characteristics

  • Applications are redesigned to use cloud-native services like serverless computing, containers, and microservices. This ensures better performance and resource utilization.
  • Refactoring allows applications to scale more easily in response to changing workloads, which is a fundamental benefit of cloud computing.
  • Legacy code is often optimized, leading to faster response times and reduced operational costs.


  • While refactoring requires more upfront effort, it often leads to long-term cost savings as applications are tailored to the cloud environment.
  • Refactored applications tend to perform better, which can lead to improved user experiences and business outcomes.
  • The ability to scale with demand makes refactoring ideal for applications with unpredictable workloads.


3. Rearchitect (Redesign)

Rearchitecting involves redesigning applications from the ground up to fully leverage cloud services. This approach offers maximum flexibility and optimization of resources.

Key Characteristics

  • Applications are built with cloud-native principles in mind, such as serverless architectures, distributed systems, and auto-scaling.
  • Rearchitected applications are designed to use cloud resources efficiently, leading to lower costs and better performance.
  • This approach enables organizations to adapt quickly to changing business needs and take full advantage of emerging cloud technologies.


  • Rearchitected applications harness the full potential of the cloud, making them highly adaptable and cost-effective.
  • By embracing cloud-native principles, organizations ensure their applications can evolve and scale as technology trends change.
  • Rearchitected applications can drive innovation and provide a competitive edge in the market.


4. Replatform (Repackage)

Replatforming strikes a middle ground between rehosting and refactoring. It involves making minor adjustments to applications to ensure compatibility with cloud platforms.

Key Characteristics

  • Applications are modified to run on cloud infrastructure without extensive code changes. This often involves upgrading libraries or making minor configuration adjustments.
  • Replatforming is chosen when organizations want to benefit from the cloud without the full-scale effort of refactoring or rearchitecting.


  • Replatforming allows organizations to mitigate some risks associated with running applications on outdated on-premises infrastructure.
  • While not as cost-efficient as refactoring or rearchitecting, replatforming can lead to moderate cost savings.


5. Retire

Retiring is the process of identifying and decommissioning legacy applications and systems that are no longer needed. This strategic step reduces operational costs and simplifies the IT environment.

Key Characteristics

  • Organizations conduct a thorough assessment to identify applications that have become obsolete or redundant.
  • By retiring unnecessary applications, organizations can reduce maintenance and licensing costs.
  • Simplifying the IT landscape can lead to improved overall operational efficiency.


6. Retain

Sometimes, certain applications or data may be better suited to remain on-premises due to regulatory or compliance requirements, security concerns, or specific operational needs.

Key Characteristics

  • Data or applications that must adhere to strict regulatory or security requirements may remain on-premises to maintain control.
  • Organizations may opt for a hybrid approach, keeping some components on-premises while leveraging cloud services for other aspects of their operations.
  • Certain legacy applications may be tightly integrated with on-premises infrastructure, making them challenging to migrate to the cloud.


Make Cloud Migration Seamless With CrossAsyst

The CrossAsyst Cloud Engineering Services team has considerable experience with cloud migration and optimization. Use our expertise to migrate from your traditional systems to cloud environments seamlessly. 

Our team will ensure you experience a smooth transition that does not disrupt your ongoing operations, all while paying the utmost attention to  data integrity and security.

Leverage our Cloud expertise to optimize your existing cloud products, and experience an unmatched increase in productivity by harnessing the full potential of your cloud platform. 

Book a meeting with our team to learn about CrossAsyst’s capabilities in cloud engineering, including cloud architecture, native app development, CloudOps and more.


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