Industry discussions of viewable ad impressions and cross-media platform comparability using common metrics have become more frequent and more intellectually robust as Making Measurement Make Sense (3MS) has continued. 3MS is the cross ecosystem initiative that is a joint undertaking of the ANA, the 4A’s and the IAB, facilitated by Bain & Company, that is changing measurement as we write this column. We embarked upon 3MS in order to focus on the digital metrics that the interactive advertising landscape requires to make digital media more brand-hospitable and more easily applicable to cross-media-platform transactions. One question on everyone’s mind as we try to determine how to prepare for the pending change in standards is: What is the status of the viewable impression pilots? Before we answer that, a brief review of why and how the pilots began is necessary. Even the word “pilots” can mean different things to different members of the field, and in this case the word means early stage tests that precede wider market tests that would then lead to a new standard. The things we are trying to learn in the pilots are as simple as: “is it feasible to use ad-serving technology to serve viewable impressions?” Even this early stage testing presents complexities that the untrained eye could not have seen. To get to the feasibility testing, the Media Rating Council (MRC) set forth 17 technical requirements to ensure that in fact, servers are testing whether or not impressions are viewable. In addition, the first round of pilots sought to provide empirical indication of whether or not the proposed minimum standard of 50% of the ad in view for one second is a reasonable one. There is data that suggests that nested i-frames may hinder the capacity to determine whether or not a served ad is viewable. We know that i-frames are a security container that protects the integrity of content and were never deliberately used to obscure measurement. Still, the ecosystem needs to have a full grasp of the scope of the potential problem. There are feasibility issues pertaining to workflow and implementation on the publisher side that we wanted to explore in the early stage pilots. And if the first early pilot tests are the indicators of any issues that have not been considered, we wanted to learn of those before moving to the second stage of pilots. Here, the reference to second stage refers to the 3MS plan to have agencies and advertisers participate in pilot tests before going into full market testing. During the period of full market testing, the industry will have access to parallel data streams in order to complete evaluations of the impacts. What have we learned in the first early stage pilots?