This document discusses four new types of teams that have emerged in the 21st century: virtual teams, diverse teams, startup teams, and self-managed teams. Virtual teams are groups of geographically dispersed workers who use technology to accomplish tasks. Diverse teams have increased diversity in factors like culture, gender, generation, and personality. Startup teams work to rapidly develop business models at new companies. Self-managed teams give people high autonomy and distribute power throughout organizations. The document provides information on the characteristics and workings of these different team types.