Yahoo! JAPAN Ads API | Developer Center

2025/02/06

Search Ads: Changes to the metrics used to calculate the factors of auction rank

Updates

• February 6, 2025: The changes to the metrics completed.
• November 26, 2024: We announced this information.

Product

Yahoo! JAPAN Ads Search Ads

Date

We started to apply the change in stages from January 2025 and complete on February 4.

Summary

To improve ad relevance, we reviewed the metrics used to calculate auction rank factors of Yahoo! JAPAN Ads Search Ads.
Note that this change may result in changes to various figures in your account, such as the number of clicks, the click rate, and the lost impression share.
Check the different figures in the report, as the nature of the fluctuations will vary depending on how the account is set up. Learn more
In addition, disclosed the factors that are important or have no impact on improving ad quality, rather than the factors that determine "ad quality."

＜Auction rank factors＞

There will be no change to the auction rank factor itself. However, the description in the help pages has been changed following a review of the calculation metrics for the factors. 
The factors are as follows:

• Bid
• Ad quality
• What led internet users to search (the context)
• Lower limit of auction rank
• Competitiveness in ad auctions
• Effects of such as ad display assets
  Learn more

＜Ad quality＞

We will disclose the factors that are important or have no impact on improving ad quality, rather than the factors that determine "ad quality."

■Important factors for improving ad quality

• Internet users' using device
• High relevance to internet users' search intentions
• Past performance for relevant keywords when adding new keywords.
  
  

■Factors that have no impact on improving ad quality

• Bid
• Account structure
• Ad delivery on our partner sites
• Ad position
• Frequency of the ad
• Conversions
  Learn more

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