Teo Lachev is a consultant, author, and mentor with more than 20 years of industry experience. Through his company, Prologika (Microsoft Gold BI partner) located in Atlanta, United States, he has implemented BI solutions that have added tremendous value to his customers. A Microsoft Certified Trainer, Teo has developed several BI classes that deliver applied, under-the-hood training. He has authored and co-authored several SQL Server Business Intelligence books and speaks frequently at industry conferences and local groups. He founded and has been leading the Microsoft Business Intelligence Group in Atlanta. Microsoft has recognized Teo's experience in Business Intelligence and contributions to the technical community by awarding him with Microsoft Most Valuable Professional (MVP) for ten years.