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Application Rehosting, Replatforming, and Refactoring: What to Choose in 2022

 Exciting new resources and functionality are often added after migration to a new infrastructure or environment; therefore, the transition itself is typically followed by the introduction of these improvements. Concurrently, the migration of actually migrating to the cloud can be time-consuming and challenging to manage in many cases. 

Application Rehosting

However, migrating to the cloud does not always have to be difficult; all you need to do is a plan. As a consequence, one of the things you should do when planning a migration to the cloud is to consider which approach would be the most effective to follow.  

Nevertheless, you should also think about the other possibilities. In this essay, we'll take a look at three of the most significant patterns that have recently emerged. There are several other alternatives available, including rehosting, replatforming, and refactoring. Which tactic do you think will prove to be the most successful? 


Rehosting is also known as "lift and shift" due to the fact that the code is relocated from one environment to another during the process. Many hail it as the best method for modernization of legacy applications. 

To finish a rehosting job requires significantly less time and resources, as you could anticipate. It is the quickest of all the options because it does not involve changing the data or the code in any way. However, rehosting is not always the choice that results in the lowest cost. 

To begin, when you move in this manner, you might not automatically receive migration to the capabilities and tools that come standard with native cloud environments. The program is still only installed on a single physical server, so it cannot take advantage of the enhanced flexibility and scalability that cloud environments offer. 



Leading the list of application modernization solutions, the replatform migration strategy represents an approach that is somewhere in the middle of the three possibilities covered in this article. It is analogous to rehosting in the sense that there is not a great deal of modification to the code. However, in order to utilize the newly developed cloud architecture, replatforming requires some modifications to be made. 

During the process of replatforming, there are several common adjustments that are made. You might, for instance, modify the way in which the application communicates with the database in order to reap the benefits of automation and to create a more advanced database infrastructure. There are various methods available for integrating the app with native Cloud features while making as few modifications to the code as possible.

The replatforming approach is an affordable alternative. There is no need to modify the cloud server in order to make it compatible with the previous environment. Instead, you may choose to begin on a small scale and gradually expand, which will allow you to make significant cost reductions while the cloud environment expands to accommodate the growing app. The pitfall of replatforming lies in the fact that if the project scope is allowed to go unchecked, it has the potential to mutate and grow into a comprehensive refactoring. This risk can be reduced by regulating the scope of the project and preventing changes that aren't necessary. 


The third approach is called refactor migration, and it's often used. In order to make the application work better in the new cloud environment, the architecture will need to be entirely rethought. In most cases, this necessitates modifying the software and a significant percentage of its source code in order to make use of cloud-based features and the increased flexibility that these features offer. 

In many cases, refactoring will result in the adoption of a cloud-native framework, which will result in an improvement in both the overall performance and the efficiency of the system. It is possible to modify the program so that it is compatible with particular cloud services such as AKS and GKE. 

The refactoring process requires a significant investment of time and resources and might take a very long period to complete. It's possible that because of this compartmentalization, the refactoring process will take longer and use up more resources. 

Which of These Options is Best For You? 

There is no one correct response to this topic, particularly given the fact that varied use cases call for unique approaches to be taken. When making a decision, the most important factor to consider between the three possibilities is identifying the strategy that corresponds most closely to your requirements and choosing the ideal custom software development company. However, there is a technique to determine which of these three approaches to cloud migration is the most suitable for your needs in comparison to the others. 

Determine to begin with whether or not the application can be moved to the cloud in its entirety while keeping the same level of operating expenses and operational efficiency. 

Here is where the rehosting process comes into play. 

You may want to examine replatforming as an option in the event that rehosting is not a viable option or if there is a need to increase cost-efficiency. 

The process of refactoring is in the same category. Do you have the time and resources required to fully restructure the solutions you have now implemented? When attempting to provide an answer to this question, you should take into account the SaaS possibilities as well as any additional alternatives. You will arrive at the best possible solution if you proceed through these stages in order. 

You can eliminate (at least) the majority of the headaches associated with moving to the cloud if you take the time to develop an appropriate strategy for cloud migration. Finding extra resources to make use of, a more flexible environment to benefit from, and a more efficient environment for your applications will be an intriguing feature to look out for. 


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