He writes about virtualization, networking, security, and enterprise computing architectures. With 20 years in enterprise and carrier data networking and network security services, Dan has held product management and technical marketing roles at Juniper Networks, Plexxi, and Extreme Networks. He has expert-level certifications in JNCIE-ENT and JNCIE-SP, and has architected large-scale deployments of MPLS and WAN networks, as well as next-generation network security infrastructures. Dan has a passion for communications (in both the messaging and data networking senses), and is driven to apply technical innovations to solving real business problems.