Andrew Butler is a vice president and distinguished analyst in Gartner Research. Initially recruited to address the Unix and midrange server market, his coverage area now encompasses market and technology trends for most server technologies (other than mainframes), including operating system evolution, architectures, platforms and vendor strategies. He is the lead analyst for Cisco Systems, authors the Magic Quadrant on blade and modular servers, and is closely involved in Gartner's growing research coverage on compute fabrics and integrated systems.