Consultancy refers to the practice of providing expert advice and guidance in a particular field or industry. Consultants are typically hired to offer their expertise on specific projects, problems, or opportunities. They may work independently or as part of a consulting firm, and their services can range from management and strategy consulting to technology, finance, human resources, and many other specialized areas. Consultants often bring a fresh perspective and specialized knowledge to help organizations improve their performance, solve problems, and achieve their goals.