Crowd challenges, also known as crowdsourcing challenges or innovation challenges, involve engaging individuals or teams from around the world to solve a specific problem or achieve a key goal. These challenges leverage the collective intelligence and creativity of a diverse group of people, typically through an online platform, to generate new ideas, solutions, or products.

The main objectives of crowd challenges are to solve complex problems, generate innovation, engage stakeholders, and build communities. These challenges help organizations or entities tap into a raft of ideas and expertise to solve complex issues that can prove difficult to address through traditional means.