A professional license is an official credential that allows individuals to practice certain professions legally. These licenses are typically required in fields such as medicine, law, and engineering, ensuring that practitioners meet specific educational and ethical standards. Obtaining a professional license often involves completing a degree, passing exams, and fulfilling ongoing education requirements. Licensing is managed by state or national boards, which set the criteria for each profession. For example, a medical doctor must obtain a medical license to treat patients, while a lawyer needs a bar license to practice law. These regulations help protect the public by ensuring qualified professionals provide services.