Consultancy firms are professional organizations that provide expert advice and services to businesses and governments. They help clients solve problems, improve performance, and implement strategies across various sectors, including finance, management, and technology. These firms often employ specialists with extensive knowledge in their fields to deliver tailored solutions. Typically, consultancy firms operate on a project basis, working closely with clients to understand their needs and objectives. They may conduct research, analyze data, and offer recommendations to enhance efficiency and effectiveness. Well-known examples of consultancy firms include McKinsey & Company, Boston Consulting Group, and Deloitte.