Ian Horne is head of data services with a global organization. He is a business intelligence (BI) professional with over 30 years of experience and specializes in the design, development, and maintenance of corporate databases, data warehouses, associated ETL processes, and end user reporting. He has extensive knowledge of the Microsoft BI stack, including SQL Server, SSRS, SSAS, Power BI, and, of course, DAX. Ian holds a diploma in computing and a Bachelor of Science degree from the Open University. In his spare time, he creates training videos on Power BI, DAX, and other data-related matters, which he shares through his YouTube channel, Data World TV.