The Mobile Viewable Advertising Impression Measurement Guidelines document that follows is intended to provide guidance for the measurement of viewable impressions in Mobile Web and Mobile In-Application (In-App) environments.
These viewability guidelines are designed for mobile (web and in-app) advertising. This document supersedes all previous MRC guidance on the measurement of viewable impressions of advertising that appears in mobile environments effective upon issuance and serves as permanent guidance (subject to periodic updates; future iterations of these guidelines will be managed in coordination with the IAB Modernizing Measurement Task Force and include appropriate notification and grace periods for compliance).