Teamwork is the structured, collaborative effort of a group working toward a shared objective. It goes beyond cooperation: strong teams rely on clear roles, shared accountability, and agreed ways to communicate, resolve conflict, and measure progress. Key takeaways: define ownership, make progress visible, and build psychological safety. Effective teamwork helps people combine different skills, create better ideas, and move from planning to delivery with less friction. Set clear goals, define roles, create continuous feedback loops, measure team health, and use a shared workspace to keep plans, updates, and progress connected.