Ernst & Young (EY) is one of the [["Big Four"]] accounting firms, a global network of professional services firms providing assurance (including financial audit), tax, consulting, and advisory services to companies worldwide. With a presence in over 150 countries, EY serves a diverse range of clients, from multinational corporations to emerging growth companies and public sector organizations. They are known for their industry expertise, commitment to quality, and focus on building a better working world.