Yahoo! JAPAN Ads API | Developer Center

Announcement

• 2025/10/15

  Display Ads (Auction): Adding portfolio bidding

  We launched “portfolio bidding” for Yahoo! JAPAN Ads Display Ads (Auction).

• 2025/10/15

  Display Ads (Auction): Changes to placement list create and edit views

  We will change the create and edit view of placement list.

• 2025/10/15

  Display Ads (Auction): SKAdNetwork feature update

  We will add new features for the iOS app SKAdNetwork.

• 2025/10/15

  Search Ads: Launch of modeled conversions

  We will start offering “estimated conversions” for Search Ads conversion tracking.

• 2025/10/07

  Display Ads (Auction): Add an audience range feature to the audience list (advanced segments)

  We added a new option, “Audience range,” to the “advanced segments” of audience lists that allows you to control the expansion range for your target audience.

• 2025/10/02

  The unification of account contract parties

  The procedures related to the succession of ad accounts has ended on September 30, 2025.

• 2025/10/01

  Search Ads: Adding quick link assets to the evaluation metric "Ad strength"

  We will add quick link assets to the evaluation metric "Ad strength."

• 2025/09/25

  Yahoo! JAPAN Ads Display Ads Integration of ad platforms

  We will integrate Yahoo! JAPAN Ads Display Ads and LINE Ads and launch them as “LY Ads Display Ads” around spring 2026.

• 2025/09/24

  Display Ads (Auction): Launch of in-stream ads

  We launched Yahoo! JAPAN Ads Display Ads (Auction) in-stream ads (in-stream ads), which deliver ads within video programs.

• 2025/09/19

  Display Ads: Update on conversion tracking duration

  In Display Ads, we have changed the range available for specifying the conversion tracking duration.