OpenX pulls back the curtain on SPO (supply path optimization) — which is all about finding the most direct path to what you want most: the chance to show your ad to the right consumer on the right publisher at the right time and at the right price. This live Q&A session will serve as an opportunity unearth answers to questions like: What is SPO exactly? Why did it come about? How does it work? What benefits can brands expect it to deliver now and in the future?