Marco is a business intelligence consultant and mentor. He first started working on Analysis Services in 1998, back when Analysis Services was known as OLAP Services.A veteran of end-to-end projects, Marco wrote several books with Alberto Ferrari about Power BI, Analysis Service, and Power Pivot. They also regularly write articles and white papers that are available on sqlbi.com. Marco is a Microsoft MVP and an SSAS Maestro, the highest level of certification on Microsoft Analysis Services.Today, Marco focuses his time with SQLBI customers, traveling extensively to train and consult on DAX and data modeling for Power BI and Analysis Services. Marco also teaches public classes worldwide.Marco is a regular speaker at international conferences like Microsoft Ignite, PASS Summit, and SQLBits. He also enjoys delivering evening sessions at local user groups during his trips.