We are going to traverse the long and winding history of Agile at Yahoo! – beginning with the period just prior to the introduction of Agile over 5 years ago, to its current (and unfinished) state – all from the viewpoint of the Agilista in the trenches. Whether the adoption is driven from the top down or bottom up, progress hasn’t always been in a straight path. We hope that the experiences we share will provide valuable insight for others in their roll-out of Agile in the enterprise, and how the DNA of Agile can survive and even thrive in both supportive and challenging circumstances.