W. Pitt Turner IV has been a Principal of Uptime Institute Professional Services since 1993 and its Executive Director since 2005. Mr. Turner co-authored the Uptime Institute, Inc. white paper Industry Standard Tier Classification Define Site Infrastructure Performance. This seminal document established a system of correlating site infrastructure with availability requirements. The Tier classification system has become the industry standard and continues to be emulated throughout the world. Additionally, he has authored or co-authored a number of articles and white papers relating to data center design, construction, or operation.