Teams have become popular because they can outperform individuals on complex tasks, better utilize employee talents, and increase employee motivation. There are two main types of teams - work groups that share information to help members perform individual tasks, and work teams that generate synergy through coordinated effort towards a common goal and achieve performance greater than the sum of individual inputs. The four main types of teams are problem-solving teams that share ideas to improve work processes, self-managed teams of 10-15 employees that take on supervisory responsibilities in addition to tasks, cross-functional teams with diverse members from different areas that develop new ideas, and virtual teams tied together through technology to achieve goals despite physical distance.