The latest Google Ads API version 24.1 introduces key improvements in reporting granularity, creative flexibility within Demand Gen campaigns, security authentication, and experimentation support, catering to the evolving needs of advertisers and developers.

Granular Mobile Device Platform Reporting

One of the significant enhancements in Google Ads API v24.1 is the introduction of mobile device platform segmentation. Through the new segments.mobile_device_platform field, advertisers can now differentiate performance data at the campaign and customer levels specifically by operating system, including iOS and Android.

This granular breakdown provides crucial insights for advertisers whose user behavior varies across platforms. For instance, ecommerce brands or app marketers can optimize bids and creatives with refined data that reflects how audiences interact on different mobile ecosystems.

Such detailed segmentation allows more strategic allocation of advertising budgets and tailored campaign adjustments, thereby maximizing conversion value.

Implications for App and Ecommerce Marketers

With this update, businesses aiming for platform-specific growth benefit from clearer visibility into user engagement and conversion trends, which can lead to more effective targeting and messaging nuances per device platform.

Expanded Creative Control in Demand Generation Campaigns

Demand Gen campaigns, known for leveraging automation, now accept static image ads via the classic_display_images field in DemandGenMultiAssetAd. This addition enables advertisers to upload creatives that appear exactly as designed on the Google Display Network without AI-driven asset combinations altering the presentation.

“Providing control over static image assets gives brand managers reassurance that their visual identity is preserved intact amid automated campaign delivery,” remarked a digital marketing strategist at a leading agency.

This update is especially valuable for brands prioritizing stringent branding guidelines or those reluctant to cede creative adjustments to AI processes.

Introduction of Passkey Authentication for Improved Account Security

Security enhancements within Google Ads API v24.1 include the implementation of passkey support. The new passkey_enabled field reveals whether users have activated passkey authentication on their accounts, marking a step towards passwordless account protection.

This aligns with Google’s broader initiative to enhance authentication security by reducing reliance on traditional passwords and mitigating risks associated with unauthorized access. Passkeys are particularly effective against phishing attempts and credential compromise.

Significant Expansion of Experimentation Capabilities

Experimentation, vital for testing and optimizing campaigns, receives a notable boost in this release. Google now supports running and comparing experiments across a wider array of campaign types, including AI Max campaigns, video campaigns, Demand Gen campaigns, and Performance Max campaigns.

The release also improves transparency in experiment data by providing more comprehensive reporting metrics such as clicks, conversions, and impressions for each experimental arm. This facilitates more straightforward side-by-side analyses, enabling advertisers to make data-driven decisions with greater confidence.

“Broadening experimental frameworks across AI-driven campaigns standardizes testing and accelerates optimization cycles,” noted a product manager specializing in programmatic advertising solutions.

Preparation for Imminent Data Retention Policy Changes

Starting from June 1st, Google Ads and associated measurement APIs will enforce a 37-month limit on granular data retention, affecting daily, weekly, and hourly performance metrics. Consequently, developers relying on older data beyond this timeframe must revise their reporting workflows accordingly.

To support this transition, the API introduces a new error code, DateRangeError.REQUESTED_DATE_GRANULARITY_NOT_SUPPORTED, which signals unsupported queries for deprecated data ranges.

Advertisers utilizing historical performance data for deep analysis or trend identification should proactively adapt their systems to prevent disruptions post-policy enforcement in 2026.

Additional Resources and Support

Google has already released updated client libraries and example code snippets for API v24.1, facilitating smoother integrations. To further aid developers and advertisers, live walkthrough sessions are available via Discord, YouTube Live, and LinkedIn Live, offering direct insights into the update scope and practical implementation guidance.

Strategic Considerations for Advertisers

With the new functionalities arriving in the Google Ads API, marketers should reassess their data strategies, campaign configurations, and security protocols. Leveraging mobile platform segmentation can unlock nuanced bidding strategies, while the option to control creatives in Demand Gen campaigns ensures brand consistency.

Moreover, incorporating passkey authentication should become a priority in account security plans. Simultaneously, enhanced experimentation features allow marketing teams to innovate confidently across multiple campaign types underpinned by AI optimization.

Remaining mindful of the impending data retention modifications ensures long-term access to critical performance data, preserving the integrity of historical insights.

Conclusion

The Google Ads API version 24.1 represents a comprehensive evolution in the platform, addressing key advertiser priorities such as detailed performance visibility, creative fidelity, security robustness, and experimental sophistication. These advancements equip advertisers and developers with stronger tools to navigate increasingly automated and data-driven campaign environments.

Businesses prepared to integrate these capabilities are likely to gain competitive advantages through enhanced optimization, improved decision-making, and fortified account protection.

For further technical documentation and updates, visit developers.google.com/google-ads/api.