This Executive Report focuses on the authors' experience implementing agile software development practices in the large and complex environment of Cisco Voice Technology Group (VTG) over a nine-month period in 2010. VTG is large both in number of people (more than 2,500) and in number of products (approximately 40-50). It is complex in terms of people distribution (globally dispersed) and product dependencies (40-plus products have deep interaction with each other). Agile practices and processes were implemented in this environment, effectively starting an organizational change.