October 2, 2025: The procedure ended.
April 18, 2025: We added the deadline for procedures.
October 7, 2024: We added the help page link.
October 2, 2024: We updated the article due to the start of procedures for the succession of ad accounts.
September 13, 2024: We updated the Master Terms and Conditions to the official version.
August 29, 2024: We announced this information.

Yahoo! JAPAN Ads Search Ads
Yahoo! JAPAN Ads Display Ads

October 1, 2024

As part of LY Corporation's efforts to realize our "Connect One" concept, we have unified the contracting parties to "Advertiser," regardless of the contract form of Yahoo! JAPAN Ads.
Along with this change, we have revised the Master Terms and Conditions.
*The "Connect One" concept is a platform that connects the "LINE Official Account" with the various services that LY Corporation provides for businesses, seamlessly integrating all customer contact points while maximizing LTV.

If you transfer the existing ad accounts under the agency agreement to each advertiser, your company must obtain the necessary access from the advertiser and complete the procedures, including agreeing to the revised Master Terms and Conditions.
Only users who have "Tool Admin" access can follow the procedure.
When a user with “Tool Admin” signs in to the account in the Campaign Management Tool, you will see a notification for procedures. Click "Go to Procedures.”
Learn more about Procedures for succession of ad accounts.
Even after the completion of the procedure for the succession of ad accounts, we don't plan to change the scope of use of Yahoo! JAPAN Ads for both agencies and advertisers.

We have reviewed the Master Terms and Conditions, focusing on provisions related to the fact that the contracting party is the "advertiser."

Procedures for succession of ad accounts has ended on September 30, 2025. Ad accounts with incomplete procedures will have their ads gradually stop running from October 1, 2025.
You need to follow the "procedures for succession of ad accounts" to rerun your ads. The deadline has passed, but the agreement procedure is still possible. Refer to the following help page.
Procedures for succession of ad accounts

• If the advertiser creates an account without going through the agency, the content of the contract doesn't change, so you don't have to agree to the Master Terms and Conditions again.
• For Yahoo! JAPAN Ads Search Ads (Shopping) accounts refer to the following announcement.
  Search Ads (Shopping): The unification of account contract parties (Procedures for succession of ad accounts)