Yahoo! JAPAN Ads API | Developer Center

2025/10/15

Display Ads (Auction): Adding portfolio bidding

Updates

October 15, 2025: The release has been completed.
October 2, 2025: We announced this information.

Product

Yahoo! JAPAN Ads Display Ads (Auction)

Tools

Campaign Management Tool
Campaign Editor
Yahoo! JAPAN Ads Display Ads API
Yahoo! JAPAN Ads Script

Date

October 14, 2025

Summary

We launched "portfolio bidding" for Yahoo! JAPAN Ads Display Ads (Auction).
You can manage your bid strategy for multiple campaigns in bulk, reducing operational workload and improving advertising effectiveness.

• Portfolio bidding is a feature that allows you to create bid strategies at an account level and apply them to multiple campaigns. For multiple campaigns grouped into the same portfolio bidding, bids are optimized on a portfolio bidding basis. Even for campaigns that just started or have few results, relatively stable ad delivery can be expected.

• By combining with the "shared budgets," this enables budget allocation and bid adjustments across campaigns, increasing the possibility of achieving target values (such as conversions or ROAS).

Notes

• When using portfolio bidding, the ad delivery is controlled to achieve goals across multiple campaigns you applied. There may be differences in spend and performance between campaigns.

• You can't use portfolio bidding for campaign goal "app promotion."

• Download the latest data before using the Campaign Editor after the change date. If you update the bid strategy and bid for a campaign that has a portfolio bidding applied from an older version of the Campaign Editor, the applied portfolio bidding will be removed and overwritten as a separate bidding.

Comments

• When using portfolio bidding, there are some restrictions on the features used together, such as automated rules and A/B test. Download the following document in Japanese for details.
  Download Document
• Refer to the following help page for details
  Create portfolio bidding [Auction]

Impact on Yahoo! JAPAN Ads Display Ads API

The impact on the Yahoo! JAPAN Ads API is as follows.

• Versions affected
  v18
• Services
  • BiddingStrategyService
  • CampaignService
  • ReportDefinitionService
• Change
  • Add new BiddingStrategyService.
    • get
    • add
    • set
    • remove
  • CampaignService
    • request
      • get
        Add portfolioBiddingIds.
      • add, set
        Add biddingStrategyConfiguration/portfolioBiddingId.
    • response
      • Add biddingStrategyConfiguration/portfolioBiddingId.
      • Add biddingStrategyConfiguration/portfolioBiddingName.
  • ReportDefinitionService
    Add PORTFOLIO_BIDDING to the reportType.

You can't check if a portfolio bidding is applied or not for v17 and earlier versions. Also, if you update the bid strategy and bid for a campaign that has portfolio bidding applied from an API v17 and earlier versions, the portfolio bidding will be removed and overwritten as a separate bidding.