Mark Lustig leads the Performance Engineering Practice for Collaborative Consulting. Mark has solved challenging performance issues for numerous Fortune® 500 companies, across a breadth of industries, notably financial services, insurance, and healthcare. In addition to being a hands-on performance engineer, Mark specializes in application and technology architecture for multi-tiered Internet and distributed systems. His 20+ years of experience in the high-technology arena includes systems architecture and performance engineering expertise, particularly in designing, implementing, and tuning applications and solving large-scale performance problems for enterprise systems.