Legacy migration

Migrating old applications to new environments and technologies is easy if we have documentation describing how they work. We then simply commission the implementation of the new technology and migrate the data.

The problem arises when such documentation does not exist. In this case, the only option is to analyse the existing software, which we treat as a prototype, and develop a description of the logic explaining how the documents generated by this application are created.

I have already completed several such projects. I was able to perform analysis and create application models, allowing for their quick re-implementation in newer technology.

Annotated UML models were created to enable their implementation, and this was not reverse engineering of the source code (which the client often does not have).