SUMMARYThis paper presents a history of the IPFIX working group, from initial chartering through development and testing, re-chartering and further development, and looking ahead to future developments. As a standardised way of exporting information about traffic flows, IPFIX has attracted a growing number of implementors, who have continued to develop it in useful ways without changing its underlying architecture. This makes it a good example of how to develop a new technology. Further, it demonstrates widespread recognition of the importance of network measurement in the development, deployment and production stages of networks and the applications that depend on them. key words: traffic flows, network data export, IPFIX