<http://schema.org/articleBody>
"Google announced on Google+ improvements to the impression share reporting section of the AdWords reporting tools.  Google has added a new competitive metrics area that adds keyword level customized columns including search impression share, search exact match impression share and search lost IS (rank).Here is an explanation of each category:Search impression share: The impressions you\u2019ve received on the Search Network divided by the estimated number of impressions you were eligible to receive.\r\nSearch exact match impression share: The impressions on exact match keywords you\u2019ve received on the Search Network divided by the estimated number of impressions you were eligible to receive.\r\nSearch Lost IS (rank): The percentage of time that your ads weren't shown on the Search Network due to poor Ad Rank. Note: Lost IS (rank) won't be shown on your Keywords tab if you ran out of budget at any point during the date range being examined.Here is a screen shot of the new reports:For more details, see this help document.Forum discussion at Google+."^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.seroundtable.com/google-adwords-improved-impression-reporting-17010.html>