Last Updated: May 13, 2024


Ifrah Khan


When it comes to modernizing your software systems, two common approaches are often considered: Refactor vs Replatform. Both have their merits and downsides and choosing between them requires careful consideration of various factors. 

In this blog post, we'll explore key factors to help you make an informed decision on whether to refactor or replatform your software.

So, you might be wondering, “What’s new in this? Aren't there tons of blogs already out there for Refactor vs Replatform and other application modernization options.”

But wait, we will be addressing each scenario in which a particular approach is useful or advisable.

Alright, let's break down these cloud application and software modernization strategies, step by step.

Replatforming and Refactoring


Refactoring involves restructuring or rewriting existing code while preserving its external behavior. It focuses on improving the code's design, making it more efficient, scalable, and maintainable. This strategy often involves breaking down monolithic applications into smaller, more manageable components, adopting modern programming languages or frameworks, and eliminating technical debt. 

Refactoring requires a deep understanding of the existing system and careful planning to ensure that the changes don't introduce new bugs or regressions.

Unique CharacteristicDescriptionWhen to Use
Balance of Change & BenefitInvolves some code modifications to leverage cloud features but avoids complete overhaul.- Partial modernization is desired while maintaining core functionalities. 
- Taking advantage of cloud-managed services (e.g., databases) for easier management.
- Applications are generally well-structured and maintainable.
Hybrid ApproachCombines elements of rehosting (existing code) and refactoring (targeted changes).- Gradual cloud adoption strategy with initial focus on cost reduction and manageability improvements. 
- Applications can benefit from some cloud-native features without a complete rewrite.
Platform AgnosticFocuses on code portability for easier migration between different cloud providers.- Avoiding vendor lock-in is a priority. 
- Future migration flexibility to different cloud platforms is desired.

Replatform (or Lift, Tinker, and Shift Migration)

Replatforming, on the other hand, involves migrating an application from one platform to another without making significant changes to its codebase. This approach is often chosen when the existing platform is outdated, unsupported, or incompatible with modern technologies.

Replatforming aims to minimize disruptions to the business by keeping the application's functionality intact while leveraging the benefits of a new platform. It typically involves migrating data, configurations, and integrations to the new environment while making necessary adjustments to ensure compatibility.

Unique CharacteristicDescriptionWhen to Use
Modernization & OptimizationSignificant code changes to fully exploit cloud capabilities and improve performance.- Applications require a complete overhaul for improved scalability, security, and maintainability.
- Legacy codebase hinders performance or limits future functionality.
- Long-term commitment to the cloud platform.
Microservices ArchitectureBreaks down monolithic applications into smaller, independent services.- Improved scalability and easier deployment of individual components.
- Facilitates continuous integration and continuous delivery (CI/CD) workflows.
Cloud-Native DesignLeverages features like serverless computing and autoscaling for efficient resource utilization.- Building applications specifically for the cloud environment to maximize benefits.
- Focus on agility and developer productivity.

Now that we have a basic understanding of both strategies, let's explore some key factors to consider when deciding which approach to take.

Refactor Vs Replatform - What's the Difference?


Cost is often a crucial factor in any migration project. 

Refactoring can be more expensive upfront due to the time and resources required to rewrite or restructure code. However, it may result in long-term cost savings by improving the application's performance and reducing maintenance overhead. 

Replatforming, on the other hand, is usually less expensive initially since it involves fewer changes to the codebase. However, there may be hidden costs associated with maintaining compatibility with the new platform or addressing technical debt in the future.


Time is of the essence in today's business environment. 

Refactoring can take longer than replatforming, especially for complex applications with extensive codebases. It requires thorough planning, testing, and iteration to ensure that the changes are implemented correctly. 

Meanwhile, replatforming can be completed relatively quickly since it involves mainly lifting and shifting the application to a new platform. However, the actual timeline may vary depending on the complexity of the migration and any unforeseen modernization challenges that arise along the way.


Every migration carries inherent risks, including potential downtime, data loss, and compatibility issues. 

Refactoring introduces the risk of introducing new bugs or regressions, especially if not done carefully. However, it also provides an opportunity to address existing issues and improve the overall quality of the code. 

Replatforming, on the other hand, may involve fewer risks since it focuses on preserving the existing functionality of the application. However, there is still a risk of compatibility issues or unforeseen complications during the migration process.

Long-term Goals

It's essential to consider your organization's long-term goals when deciding between refactoring and replatforming. 

Refactoring may be the preferred option if you're looking to modernize your application, improve its scalability and maintainability, or adopt new technologies. It allows you to future-proof your codebase and adapt to changing business requirements more effectively. 

However, replatforming may be more suitable if your primary goal is to quickly migrate to a new platform without disrupting business operations. It provides a more straightforward path to achieving short-term objectives but may require revisiting the migration strategy in the future to address technical debt or scalability issues.

Compatibility and Interoperability

Consider the compatibility requirements with existing systems and third-party integrations. 

Refactoring allows for finer control over maintaining compatibility with existing interfaces and dependencies, minimizing disruptions to downstream systems. 

On the other hand, Replatforming may require additional efforts to ensure seamless integration with existing workflows and external services, potentially leading to temporary disruptions or compatibility issues during the migration process.

Complexity of the Application

Assess the complexity of your application architecture and codebase. 

Refactoring is often more suitable for applications with modular architectures or well-defined components, as it allows for targeted improvements without overhauling the entire system.

However, for monolithic applications with tightly coupled components, replatforming might offer a more straightforward path to modernization by breaking down the application into smaller, more manageable parts.

Modernize Your System

Specific Use Cases for Refactoring

Improved Code Readability

  • Your codebase is cluttered, uses complex logic, or lacks proper naming conventions, making it difficult for you or other developers to understand.
  • Frequent code reviews and maintenance become time-consuming due to poor readability.

Example: A codebase written by multiple developers over time has become messy, with functions containing hundreds of lines and cryptic variable names. Refactoring can involve breaking down these functions, using descriptive names, and adding comments to improve clarity.

Maintainability and Reusability

  • Your code contains duplicated functionalities scattered across different parts of the application.
  • Modifying a specific feature requires changes in multiple locations, increasing the risk of errors.

Example: You have the same login functionality implemented in two separate sections of your application. Refactoring can involve creating a reusable login module that can be integrated wherever needed.

Performance Optimization

  • Your application experiences slow loading times or inefficient resource usage due to poorly optimized code.
  • Certain sections of code contain redundant calculations or operations.

Example: A loop iterates through a large dataset without proper indexing, leading to slow processing times. Refactoring can involve optimizing the loop with appropriate data structures and algorithms for better performance.

Bug Fixing and Debugging

  • Your code contains hidden bugs or errors that are difficult to identify due to its complexity.
  • Debugging specific issues becomes time-consuming due to poorly structured code.

Example: A complex conditional statement with nested loops is causing unexpected behavior. Refactoring can involve simplifying the logic and using proper error-handling mechanisms to isolate and fix bugs more easily.

Preparing for Future Growth

  • Your application is reaching its capacity, and future expansion or adding new features might be challenging with the current code structure.
  • The codebase lacks proper modularity and separation of concerns, making it difficult to scale.

Example: Your e-commerce platform is experiencing rapid growth, and the existing codebase struggles to handle the increased traffic and product data. Refactoring can involve separating the user interface, business logic, and data access layers for better scalability.

Specific Use Cases for Replatforming

Outdated Technology

  • Your current platform is no longer supported or lacks security updates, making your application vulnerable.
  • The technology used is outdated and hinders adding new features or functionalities.
  • Scaling your application on the existing platform becomes difficult and expensive.

Example: A company built its e-commerce website on a legacy platform ten years ago. The platform lacks features for mobile optimization and integrating modern payment gateways. Replatforming to a modern e-commerce platform like Shopify or Magento would allow for easier scaling, improved security, and a better customer experience.

Performance Issues

  • Your current platform struggles to handle increasing traffic or data volume, leading to slow loading times and crashes.
  • The platform architecture is inefficient and needs a complete overhaul for better performance.

Example: A social media platform built on a custom framework experiences frequent outages due to high user traffic. Replatforming to a cloud-based solution with auto-scaling capabilities can ensure smooth performance even during peak usage periods.

Limited Functionality

  • Your current platform lacks the essential features needed for your application's functionality.
  • Integrating additional features becomes complex or impossible on the existing platform.

Example: A content management system (CMS) built on a simple platform lacks features for managing user roles, permissions, and workflows. Replatforming to a more robust CMS like Drupal or WordPress provides the necessary functionalities for efficient content management.

Security Concerns

  • The platform you're using has known security vulnerabilities or is prone to data breaches.
  • Implementing industry-standard security measures becomes difficult on the existing platform.

Example: A healthcare provider uses a custom-built application for patient records management. Security concerns arise due to outdated technology and lack of compliance with HIPAA regulations. Replatforming to a secure healthcare-specific platform ensures data protection and regulatory compliance.

Mergers and Acquisitions

  • Two companies merge, and their applications need to be consolidated onto a single platform.
  • Integrating disparate systems from both companies becomes cumbersome.

Example: Company A acquires Company B. Both companies have separate e-commerce platforms. Replatforming both websites onto a single platform streamlines operations and provides a unified customer experience.

Refactor or Replatform now

Refactor VS Replatform- Which Approach is Best for Your Business?

In conclusion, there is no one-size-fits-all answer to the question of refactor vs replatform. Both strategies have advantages and drawbacks, and the best approach depends on your organization's specific needs, priorities, and constraints. 

It's essential to carefully evaluate the costs, timeframes, risks, and long-term goals before making a decision. Ultimately, refactoring vs replatforming, or whichever strategy you choose, proper planning, communication, and execution are key to a successful migration.

Ready to take your organization's systems to the cloud hassle-free? Narola Infotech is here to help! Our solutions are designed to make migration and modernization easy, fast, and affordable. With a range of products and services, we ensure a smooth and scalable transition.

Frequently Asked Questions (FAQ)

See the answers to some of our most commonly asked questions below.

Refactoring involves restructuring or rewriting existing code to enhance its quality, maintainability, or performance, without altering its external behavior. Replatforming, however, focuses on migrating an application to a new platform while retaining its functionality. While refactoring targets code improvement, replatforming addresses infrastructure modernization.

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