(Editor’s note: AListDaily is the publishing arm of the Ayzenberg Group. To read the updated Ayzenberg Earned Media Value Index report reflecting the rapid changes in social, click here.)

Marketers who have been seeking to understand the performance and value of their social campaigns and get an independent validation of their ROI had—until recently—a relatively limited set of resources to evaluate a campaign’s effectiveness. The Ayzenberg Earned Media Value Index report, first released in March 2016 aimed to deliver an industry-standard rubric for marketers to measure the value of their campaigns against.

A new update to the Ayzenberg Earned Media Value Index, released today, reflects the mercurial nature of the changing media landscape, with newly developed values based on a methodology which incorporates vertical pricing across various industries, predictive modeling from historical data, seasonality (how rates shift during certain times of the year) and also takes into account not just impressions, but a campaign’s influence on consumers.

The Index reflects years of paid buying experience, research and technologies that are capable of identifying cohorts, behaviors, timing and intent, as well as industry-wide feedback to create a continuously-developed resource to indicate a campaign’s real-world success.

The Index is available to brands, agencies and marketers, and is available via download or API. To download the Ayzenberg Earned Media Index, visit ayzenberg.com/emv.