Assess graduate-level understanding of how internal talent marketplaces and skill-based career frameworks influence mid-career mobility and retention in multinational corporations; tasks will require analysis of mechanisms (matching, reskilling, career ladders), evaluation of empirical metrics (internal mobility rates, attrition differentials, time-to-fill, skill gap closure), critique of implementation challenges across geographies and business units (governance, labor laws, culture), interpretation of case-study and quantitative data, and formulation of evidence-based recommendations balancing strategic talent objectives, equity, and operational trade-offs.