Definition and Types of Cloud Migration

 

Cloud migration is the process of transferring business applications, corporate data, and IT processes to a cloud-based environment. Cloud migration service providers assist small businesses in migrating from on-premises to the cloud. One of the key benefits of cloud migration is the ability to adopt a ‘pay-as-you-go’ model based on consumption, providing higher flexibility in a cost-effective manner.


Cloud migration managed service providers categorize the process into seven different approaches, known as the 7 ‘R’s. These strategies for cloud migration include:

  1. Rehost (Lift and Shift)

This approach involves moving an application to the cloud without making any changes to the application itself. It is the quickest method but offers limited benefits to companies.

2. Refactor (Re-architect)

This strategy entails redesigning an application completely to leverage cloud-native services and infrastructure. Although highly time-consuming, it often yields the highest benefits.

3. Revise

This involves making minor modifications to your business application to optimize its performance in the cloud. It serves as a middle-ground approach between Rehost and Refactor.

4. Rebuild

This concept focuses on creating a new application with similar functionality using cloud-native technologies. It is useful when the original application is outdated.

5. Replace

According to this strategy, cloud migration service providers substitute an existing application with a cloud-based Software-as-a-Service (SaaS) equivalent. This is a quick and cost-effective option.

6. Retain

This approach is suitable when a company wants to keep an application on-premises due to specific reasons, such as regulatory compliance.

7. Retire

This involves the complete discontinuation of an application. When an application is no longer required, this concept can be applied.

Let’s review some common triggers for migrating your legacy business system to the cloud.

Source: https://www.silvertouch.ca/blog/your-guide-to-cloud-migration-strategies/

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