From where does IBM Refactoring Assistant retrieve the application dependency data it displays?

Think of it like working hands-on with IBM mainframe systems — the answer here is 'From the ADDI Server repository via its REST API'. IBM Refactoring Assistant connects to the ADDI Server REST API to retrieve pre-analyzed application metadata, dependency graphs, and inventory so architects can visualize and plan refactoring. On real mainframe exams, this concept comes up repeatedly so make sure you have it locked in.