Talent mobility and multi-company careers have become essential for leadership in today's dynamic business environment. Lifetime careers at single companies are no longer sufficient given the modular and global nature of value chains. The best and brightest talent now seek a variety of experiences across multiple employers to provide contemporary professional learning and remain relevant. While companies still aim to retain top performers, they must also embrace larger inflows and outflows of talent between firms to access needed skills. This ensures crucial contributions to success from diverse leaders and new levels of flexible resourcing.