As of my last knowledge update in September 2021, the world’s largest IT consulting company is Accenture. Accenture is a multinational professional services firm that provides a wide range of consulting, technology, and IT Services outsourcing services to clients across various industries. It offers expertise in areas such as digital transformation, technology strategy, cloud services, cybersecurity, and more.
It’s important to note that the status of companies can change over time due to factors such as mergers and acquisitions, market fluctuations, and changes in business performance. Therefore, I recommend checking current and reliable sources for the most up-to-date information on the largest IT consulting companies.