4 skills.
Use when asked to align an organization's business processes, information systems, and technology infrastructure at the whole-enterprise level — business/information/technology/application architecture — as distinct from a single system's software-architecture.
Use when asked to plan or run change management for a large organizational change (merger, reorganization, major technology rollout) — planning/implementation/evaluation stages, stakeholder engagement, resistance — as ECM, distinct from the specific change-improvement techniques in dmaic, kaizen, and adkar.
Use when asked to manage an organization's whole project portfolio strategically — identification/prioritization, resource allocation, portfolio-level risk management, performance tracking — as EPPM, a large-organization-scale application of portfolio-management's concepts.
Use when asked about ERP systems — integrated software managing finance, accounting, HR, supply chain, and CRM in one centralized platform — for understanding what an ERP system does, its benefits, and implementation considerations.