What is the primary role of the ADDI Server component within the ADDI architecture?

Think of it like working hands-on with IBM mainframe systems — the answer here is 'Storing and serving the application metadata database that other ADDI components populate and query'. The ADDI Server is the central repository that stores application inventory, dependency graphs, and metadata populated by the Analysis Server and queried by downstream tools like the Refactoring Assis. On real mainframe exams, this concept comes up repeatedly so make sure you have it locked in.