Migrating to the cloud is indeed a very complex process and must indeed be customized to address the technical and the functional needs of the entire organization. A successful migration strategy would indeed address some short-term aims and like decreasing the hosting costs and even the long term goals like the better alignment between the IT and the business objectives. Well, here are some main cloud migration strategies which you could use to properly meet your goals.
The first strategy being the Homogenous “lift and shift” migration.
This one is actually what it sounds like. You life an application or the landscape out of the current hosting environment and then you shift it into another environment. A good example would be the on-premise hosting to a public cloud hosting. Replatforming would be a variation of the lift and shift by involving some adjustments when you want to improve the landscape in a lot of different ways.
The second strategy would be the Technical Migration.
The technical migration would maintain all of the existing application and also perform upgrades to the operating system and will also meet certain transformational goals. A the cloud migration strategy, this is indeed done often and in part because you would want to harness the cloud native features just like the scalability or even the automation, but you should know that it has other benefits as well.
The third strategy would be the Application Migration.
In this, the application layer is indeed transformed with the operating system. There are also 3 basic strategies for the application migration, which would be the implementation of the new system, the conversion of it and also the transformation of the landscape.
The implementation of the new system would mean that you are starting over and although all of the data is generally preserved and even transferred in the process, the applications are either rebuilt of even developed from scratch. They could also be replaced with the new off-shelf applications. It goes without saying that it is indeed a complicated process, and the organization needs to ensure that all kinds of functionalities are replicated properly by the new system with the business process flows. All of the old data should indeed be audited and probably discarded where appropriate. It should also be reformatted in order to work with the new system. You should also know that on top of that, there is indeed a requirement to retain the team in a new suite of all applications which indeed may be functional yet, quite different from the previous application stacks.
In most scenarios, cloud migration is indeed encouraged and must be considered as it is a great option.