The July 31, 2025 release of the Display & Video 360 API (v4) brings two important enhancements and Google is now urging everyone to switch from v3 to v4 before v3 sunsets on October 7, 2025
New Features Added in v4
Campaign- and Insertion Order–Level Targeting Support:
You can now manage targeting settings (e.g. geo, audience, device filters) directly at the campaign or insertion order level, just like you could in v3—closing the gap between versions.
Video Inventory Controls for YouTube & Partners:
You can now retrieve settings like YoutubeAndPartnersSettings.videoAdInventoryControl to manage where your video line items serve—within v4
Why Migrate Before October 7, 2025?
v3 will be fully discontinued after that date, and existing systems using v3 will break
All new updates and features going forward will target v4 only
How to Migrate from v3 to v4
Update Your Endpoint URLs:
Change API calls from https://displayvideo.googleapis.com/v3/... to https://displayvideo.googleapis.com/v4/.
Upgrade Your Client Library:
Ensure you have the latest SDK version that supports v4 functionality and models.
Check Breaking Changes:
Adjust to any modified request/response structures, added services (advertisers.campaigns.listAssignedTargetingOptions, etc.) and new enum values like ThirdPartyVendor
Test and Validate:
Run integration tests to confirm targeting APIs and video control methods return expected results in v4.
Use Google’s Migration Guide & Support:
Review the official v4 migration guide, and contact Google via their Display & Video 360 API tech support form if questions arise
Summary
New in July 2025: Targeting at campaign & IO level + ability to retrieve YouTube & Partners inventory settings in v4.
Why it matters: v3 is deprecated and will stop working on October 7, 2025.
Migration steps: Switch endpoints, update libraries, adapt to schema changes, run quality tests, and refer to Google’s migration guide.