October 1, 2026
Every month, we collect the main updates to Google Marketing Platform tools. Here's what changed in DV360, GA360, and CM360 in September 2026.
Google Marketing Platform – News for September 2026
October 1, 2026
Every month, we collect the main updates to Google Marketing Platform tools. Here's what changed in DV360, GA360, and CM360 in September 2026.
Svitlana Kryskova
[Update] Display & Video 360 Exchange Name Changes — September 21, 2026
Essence: The names of several exchanges in Display & Video 360 reporting are being updated.
Why this matters:
- Connatix → JWX Seedtag
- Seedtag→ NeuroX
- Exchange IDs remain unchanged, so existing technical configurations and integrations will continue to work.
[Update] Audience Composition Report Dimensions Deprecation — September 2026
Essence: Several legacy dimensions will be removed from Instant reports, Inventory Availability reports, and the Bid Manager API.
Why this matters:
- Bid Manager API users should update their scripts and remove dependencies on these dimensions.
- Match Ratio will be removed.
- Eligible Cookies on Third-Party Audience List and Interest will be removed.
- Eligible Cookies on First-Party Audience List will be removed.
- No action is required for reports.
[Update] Floodlight and Inventory Availability Reports Migration to Instant Reporting — September 2026
Essence: Floodlight Reports and Inventory Availability Reports (IAR) are moving from legacy Offline Reporting to Instant Reporting.
Why this matters:
- Automatic migration: The transition will happen automatically.
- Preparation: Google recommends starting to use Instant Reporting before the migration.
- Reporting workflow: These reports will be accessed through the new reporting system going forward.
[Update] Legacy ID Deprecation — September 2026
Essence: Campaign Manager 360 is updating criterion IDs in Path to Conversion (P2C) and Custom Floodlight Variable (CFV) reports to align with cross-platform data standards.
Why this matters:
- Affected fields include Paid Search Match Type, Bid Strategy, Bid Strategy ID, Legacy Keyword ID, and other Paid Search dimensions.
- For about 1 month, reports will contain both old and new IDs.
- After the transition, only the new IDs will remain.
- Teams using these fields in reporting or scripts should review, test, and update their systems to avoid reporting disruptions.
[Update] Modeled Conversions in Custom Floodlight Variables (CFV) — Q1 2027
Essence: CFV reports that do not request unattributed conversions will automatically include modeled conversions, improving reporting speed and completeness.
Why this matters:
- Modeled conversions included automatically: Reports will contain modeled conversions alongside observed conversions.
- Faster reporting: The change is expected to reduce reporting latency.
- Higher conversion totals: Total conversions in CFV reports may increase due to the inclusion of modeled conversions.
- No action required: The migration will happen automatically.
[Update] Display Impression Counting Moves to Begin to Render — February 2027
Essence: Campaign Manager 360 and Display & Video 360 are changing billed display impression counting from “on-download” to “begin to render.”
Why this matters:
- An impression will only be counted once the creative assets have finished downloading to the browser.
- The new method is stricter and aligns with MRC standards.
- Google expects a slight decrease in overall billed impression volume.
- No action is required from advertisers.
[Update] Hostname Filters — September 21, 2026
Essence: Google Analytics now supports Include filters for hostnames, allowing you to create an allowlist of approved domains that can send event data to your property.
Why this matters:
- Approved Domains Only: You can define which hostnames are authorized to send data to GA4.
- Less Manual Maintenance: Unlike the previous exclude-only approach, the allowlist reduces the need to constantly update spam exclusions.
- Better Data Quality: Events from unauthorized hostnames are blocked automatically.
- Important limitation: Hostname Include filters do not apply to Measurement Protocol events; events with an empty hostname will also be blocked.
[Update] Dashboards — September 9, 2026
Essence: Dashboards are now available in Google Analytics, providing a flexible way to bring key business KPIs together in a single report.
Why this matters:
- New Visualizations: The launch includes additional report visualization options.
- Centralized KPIs: View important business metrics in one place.
- Flexible Visualization: Create data visualizations directly within the dashboard.
- Drag-and-Drop: Arrange dashboard elements using an intuitive drag-and-drop interface.
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