Zach Seils, CCIE No.7861, is a Technical Leader in Cisco's Advanced Services Data Center Networking Practice. His focus is the design and deployment of Cisco WAAS solutions for Cisco's largest enterprise customers. He is also frequently engaged with partners and internal Cisco engineers worldwide to advise on the design, implementation, and troubleshooting of Cisco WAAS. Joel Christner, CCIE No.15311, is a Technical Leader in Cisco's Application Delivery Business Unit. He is responsible for system and solution architecture of the Wide Area Application Services (WAAS) product, and works closely with engineering on new and emerging product requirements and implementation.