7Rs of Cloud Migration Strategies

Cloud migration is the process of moving data, applications, and other resources from an on-premises infrastructure to a cloud-based environment. It has become increasingly popular in recent years, as organizations seek to take advantage of the scalability, flexibility, and cost savings offered by cloud computing. However, cloud migration can be a complex and challenging process, and organizations need to carefully consider their options when planning a migration project. The 7Rs of cloud migration strategies provide a useful framework for organizations to follow when planning a migration project. In this article, we will take a closer look at the 7Rs of cloud migration strategies and how they can be used to achieve a successful migration.

1. Rehost

Rehosting, also known as "lift and shift," involves moving an application or workload from an on-premises environment to the cloud without making any significant changes. This approach is often used when an organization needs to move quickly and does not have the time or resources to make significant changes. The main advantage of rehosting is that it is relatively quick and easy and can be a good way to get started with a cloud migration project. However, it may not be the best option in the long term, as it does not take full advantage of the benefits of cloud computing.

2. Refactor

Refactoring involves making some changes to an application or workload before moving it to the cloud. This might involve re-architecting the application, optimizing its performance, or making other changes to take advantage of the features of the cloud environment. Refactoring can be more time-consuming than rehosting, but it can also result in significant cost savings and performance improvements.

3. Revise

Revising involves making significant changes to an application or workload before moving it to the cloud. This might involve rewriting parts of the code, changing the database schema, or making other significant changes. Revising can be a good option if an organization is looking to modernize an application or workload or if it is not well-suited to the cloud environment.

4. Rebuild

Rebuilding involves completely rewriting an application or workload for the cloud environment. This can be a time-consuming and expensive process, but it can also result in significant improvements in performance, scalability, and other areas. Rebuilding can be a good option if an organization is looking to take full advantage of the features of the cloud environment.

5. Replace

Replacing involves replacing an existing application or workload with a new application or workload that is better suited to the cloud environment. This can be a good option if the existing application or workload is outdated or not well-suited to the cloud environment. However, it can also be a time-consuming and expensive process, and it may not always be possible to find a suitable replacement.

6. Retain

Retaining involves keeping an application or workload in its existing environment and not migrating it to the cloud. This can be a good option if the existing environment is meeting the organization's needs and there is no need to migrate. However, it may also result in missed opportunities to take advantage of the benefits of cloud computing.

7. Retire

Retiring involves decommissioning an application or workload that is no longer needed. This can be a good option if an application or workload is no longer in use or if it is outdated and no longer meets the organization's needs. Retiring can help reduce costs and simplify an organization's IT environment.

In conclusion, the 7Rs of cloud migration strategies provide a useful framework for organizations to follow when planning a cloud migration project. By carefully considering each option and choosing the approach that best suits their needs, organizations can achieve a successful cloud migration that meets their business requirements and takes full advantage of the benefits of cloud computing.

Migration Strategy decision criteria should be based on both Business and Technical needs.

The level of effort required in migrating increase bottom up as described in the image below.