Satya Nadella

Microsoft CEO Satya Nadella transformed a "lost decade" tech giant into the world's most valuable company (at various points) through his "mobile-first, cloud-first" strategy. Since taking charge in 2014, Nadella grew Microsoft's market cap from $300 billion to $3+ trillion. His acquisition of LinkedIn ($26B), GitHub ($7.5B), and 49% stake in OpenAI ($13B) stand as the defining M&A moves of the cloud-AI era.