Enterprises across industries are migrating to the cloud in large numbers, thanks to benefits like reduced costs, improved security, and instant upgrades. Most of these move to cloud services providers like AWS, Google Cloud, Azure. Enterprises should consider factors like the size of their organization, the kinds of data they would like to migrate while planning a cloud migration strategy. Here are some strategies that are popular with enterprise software migration.
Lift and Shift
This is the fastest cloud migration strategy. The approach is to take existing enterprise applications and associated data from its current location on-premise to the cloud as-is. Here it is necessary to consider the storage and network requirements of the application – it should be similar to what is available in the cloud services provider.
The lift and shift approach has several benefits – it is speedy and least disruptive, it requires minimal planning, and it reduces costs. However, it may not suit all enterprises. There are high chances of optimization problems which occur when legacy workloads lack the on-premise resources. Also, there may be missed opportunities, as a lift and shift approach may not be sufficient to achieve optimum cloud benefits.
With refactoring, applications are moved to the cloud with extensive modifications to the software and code to take advantage of the cloud infrastructure. This means that refactored applications can pull data from the cloud and analyze it as well.
While this is a more complex approach which requires strategic planning, there are benefits. One advantage is that while legacy applications are being refactored for the cloud, the legacy systems can continue to run locally. This approach also provides a high return on investment.
Other benefits include increased resilience and long-term cost savings. The main disadvantages are that it is a time-consuming and resource-intensive process requiring a team with advanced skills in automation, coding, and DevOps.
Replatforming allows enterprises to take maximum advantage of the cloud. The application is modified and optimized towards becoming cloud-native. Some of the more commonly used modifications during replatforming are changing the way the app interacts with the database and shaping a limited number of components to capitalize on cloud services.
The main advantage is that it offers a significant improvement in lift and shift without the complexity and costs of refactoring. Replatforming can further help reduce the costs of cloud migration while minimizing risk.
Cloud migration is a strategic move that will bring several benefits. With careful planning and developing a sound cloud migration strategy, there will be less downtime and better outcomes and return on investment in the long term.