Today we have an application made in java, but this application does not use any framework in the backend, I need to do another project and I do not want to use the same architecture, I already have the approval and I will do the new project in spring boot.
Today we have a large application that does not use any framework, what I need to do is in the old application to make some information available and in the spring project to consume this information.
What would be the best way to do this communication?