Mainframe Modernization Approaches
In order to determine a viable strategy that allows us to successfully address legacy application modernization, it is crucial to understand the most common approaches. For example,
Also known as “lift and shift.” This refers to taking an existing application and moving it from the legacy environment to a more modern infrastructure, usually cloud computing.
Under this approach, the application is migrated as-is, without changes to its code. It’s worth noting that not all legacy applications can be updated using this approach to the problem.
If you are particularly interested in the “Cloud computing” paradigm, we invite you to continue reading this article on the Google website where you can also find us on the list of Technology Partners endorsing us to start the modernization process.
Refactoring is rewriting or restructuring existing software. Essentially, a piece of software is taken and rewritten, typically using native capabilities of the target platform, so that it performs the same function but optimally in the new environment.
This approach is suitable when the software earmarked for updating is divided into smaller functional pieces, with specific clear coupling points, or in a functioning distribution called a microservice.
This approach is applied when we need to delve into the changes made to the original architecture of the candidate software. It typically involves deeper complementary updates, ranging from replacing pieces of code or even the backend database access.
Once the different approaches and ways to approach Legacy System modernization are understood, we must ask ourselves the following question: How well do we know our system to migrate?
The extent of this answer will directly determine the strategy to be used, and at Base100, we have a lot to say about it.