When size doesn't matter discusses adopting agile practices in large enterprises. While scaling agile is difficult for large, distributed teams, the case study organization Zira found success by: 1) Thinking of agile as a tool, not a solution, to address underlying cultural issues. 2) Taking a product-oriented rather than project-oriented approach and starting with lightweight designs. 3) Improving interactions between business and IT and redefining managerial roles. 4) Communicating effectively and colocating teams when possible.