Ab Initio documentation is proprietary and typically only provided to licensed customers. This report synthesizes information from public technical resources, user groups, and standard Ab Initio training materials. Report: Ab Initio Metadata Hub Documentation 1. Executive Summary The Ab Initio Metadata Hub (often referred to as the Metadata Hub or MDH ) is a central repository and governance platform for managing metadata across the entire Ab Initio ecosystem. It enables organizations to capture, store, analyze, and govern technical, business, and operational metadata from Ab Initio graphs, plans, EME (Enterprise Meta Environment), and external systems.