Andrew McDonald is a Cisco network and security architect; he works in the Customer Experience, Security Advisory team for Cisco. He specializes in leading delivery teams creating network segmentation and Zero Trust designs and implementation plans. He has been with Cisco for more than 22 years, working as an escalation engineer, network consulting engineer, systems integration architect, and security architect. Andrew has worked with global customers in all industry verticals and at every level, from front-line support engineers to C-suite executives across multiple technical disciplines. Andrew has worked in the networking and communications industry for more than 40 years. In 1981, he started as a telecommunications technician for Digital Equipment Corporation, where he developed an entry level into a lifelong career.