If the success of an innovation relates to the practice of Open Science — which at PLOS is about much more than reputation; it’s central to our mission — then what does success look like? And how do you measure it at the publisher scale? Indeed, to make progress towards any goal, good data are needed, including a view of your current and desired future states. Unfortunately, as recently as last year, there were no tools or services that could tell us everything we wanted to know, at PLOS, about Open Science practices. . . . This is, in part, why we developed and have recently shared the initial results of our "Open Science Indicators" initiative.