Update
August 24, 2023: This change has been released.
August 9, 2023: Announced this information.

Product
Yahoo! JAPAN Ads Display Ads (Auction)

Date
August 23, 2023

Summary
We have changed “Lost impression share” (budget or rank) for cases when you set a bid strategy that automatically adjusts the bid.
When delivery opportunities are lost due to a limited budget or ad position, in your set bid strategies (maximize conversions, maximize clicks, maximize video views, enhanced CPC), this change allows you to improve measures and enhance operational efficiency.

Precaution
When using the bid strategy after this release, the actual results of “Lost impression share (budget)” and “Lost impression share (rank)” may change. There is no change in the total value “Lost impression share (budget)” and “Lost impression share (rank)” may change.

To improve the impression share, refer to the following help page.
How to improve your impression share