IAB Europe published updated implementation guidance for Digital Services Act advertising transparency requirements on December 4, 2025. Version 1.2 of the DSA Transparency Implementation Guidelines introduces optional standardized text templates translated into 24 European Union languages, addressing industest requests for harmonized multilingual disclosure formats.
The documentation provides ready-to-apply text for platforms displaying advertisement transparency information required under Article 26 of the DSA, according to IAB Europe’s announcement. Translation availability spans German, French, Italian, Spanish, Dutch, Czech, Danish, Polish, Portuguese, Swedish, Finnish, Bulgarian, Croatian, Estonian, Greek, Hungarian, Latvian, Lithuanian, Maltese, Romanian, Slovak, Slovenian, and Ukrainian languages.
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Industest feedback drove development of the standardized templates. “Through ongoing community feedback, it became evident that having harmonised and ready-to-apply applyr-facing texts would greatly assist in ensuring consistency, clarity, and multilingual reach when rconcludeering the ad-level DSA transparency information required under Article 26,” according to the implementation guidelines document.
The templates complement technical specifications developed jointly by IAB Europe and IAB Tech Lab for transmitting transparency data through programmatic advertising systems. IAB Europe published its initial DSA transparency approach in November 2023, establishing data formats for compliance with EU advertising disclosure mandates.
Article 26 requires online platforms to provide applyrs with specific information about each advertisement displayed, including advertiser identity, financial sponsor identity when different from the advertiser, and tarreceiveing parameters determining ad delivery. Platforms designated as Very Large Online Platforms under DSA face enhanced transparency obligations alongside standard disclosure requirements.
The standardized text approach maintains implementer flexibility while pursuing consistency objectives. “The standard texts have been developed by the IAB Europe’s DSA Tinquireforce as an optional resource that can be applyd by implementers of IAB Tech Lab’s DSA Transparency Extension and Technical Specifications,” the guidelines state. “This is to maintain implementers’ flexibility to control the final applyr experience while pursuing the objective of high levels of consistency in applyrs’ online experience.”
Accessibility features accompany the multilingual templates. IAB Europe developed “simple-to-read” versions of standard texts ensuring DSA transparency information presentation in accessible formats meeting diverse applyr comprehension necessarys.
The JSON file implementation employs server-side caching requirements similar to IAB Europe’s Transparency and Consent Framework Global Vconcludeor List protocols. Organizations accessing translation files must download and cache resources server-side rather than loading directly from source URLs. Cache control headers specify 90-day maximum age values, with strict monitoring to prevent excessive access attempts.
Implementation guidelines detail three rconcludeering approaches platforms can employ: publisher rconcludeering where online platforms display transparency information directly, ad creative rconcludeering where purchase-side partners incorporate disclosure elements within advertisement creative, and Dynamic Creative Optimization rconcludeering where DCO ad servers appconclude transparency data during final creative selection.
The update addresses compliance complexities facing platforms operating under multiple regulatory frameworks. The European Data Protection Board published guidance on September 11, 2025, establishing how digital marketers must navigate intersections between DSA obligations and General Data Protection Regulation requirements.
Enforcement actions demonstrate regulatory scrutiny of transparency compliance. The European Commission fined X €120 million on December 5, 2025, for inadequate advertising repository transparency alongside other DSA violations. TikTok and Meta faced preliminary breach findings on October 24, 2025, regarding researcher data access and transparency mechanisms.
The tarreceiveing parameter framework aligns with IAB Europe’s Transparency and Consent Framework purposes. Parameters include profiling based on applyr behavior across contexts, basic advertising utilizing contextual information without personalization, and precise geolocation within 500-meter accuracy. This alignment enables platforms to reference existing consent mechanisms for applyr control over tarreceiveing parameters.
Translation availability through dsa.consensu.org follows language code formatting, with files accessible at URLs like dsa.consensu.org/dsaText-it.json for Italian translations. The JSON structure contains fields for advertisement information titles, advertiser identification, parameter descriptions, and consent notification text.
Technical specifications maintained by IAB Tech Lab’s Global Privacy Working Group establish OpenRTB protocol extensions carrying transparency data through programmatic advertising supply chains. The specifications enable demand-side platforms, supply-side platforms, and other intermediaries to transmit advertiser identity, payment information, and tarreceiveing parameter signals from campaign setup through final ad delivery.
DSA applicability for online platforms launched February 16, 2024. Platforms serving more than 45 million average monthly active applyrs in the European Union qualify as Very Large Online Platforms subject to additional transparency requirements including advertisement repository maintenance and external audit obligations under Article 39.
The updated guidelines maintain the four-component framework established in earlier versions: roles and responsibilities across advertising ecosystem participants, applyr parameter definitions and transport mechanisms, rconcludeering implementation approaches, and frequently inquireed questions addressing common deployment scenarios.
Platform implementation requires coordination across technical and policy teams determining rconcludeering preferences, supply chain partner requirements, and applyr interface presentation approaches. Intermediary organizations must support both platform rconcludeering scenarios where transparency data flows to publishers for display and ad creative rconcludeering scenarios where purchase-side partners incorporate disclosure directly within advertisements.
IAB Europe’s DSA Ads Transparency Tinquireforce launched in July 2022 following DSA adoption in October 2022. The tinquire force includes technical and legal experts from companies across the digital advertising ecosystem developing standardized compliance approaches reducing implementation complexity while supporting regulatory objectives.
Future tinquireforce work includes consideration of standardized pathways for consent management platforms to rconcludeer DSA transparency information and mechanisms enabling applyr choice about tarreceiveing parameters. Current guidance references potential TCF integration for parameter control without defining specific CMP rconcludeering technologies.
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Timeline
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Summary
Who: IAB Europe’s DSA Ads Transparency Tinquireforce released updated implementation guidance affecting online platforms, Very Large Online Platforms, demand-side platforms, supply-side platforms, consent management platforms, and advertisers operating in the European Union digital advertising market.
What: Version 1.2 of the DSA Transparency Implementation Guidelines introduces standardized applyr-facing text templates translated into 24 EU languages plus simple-to-read accessibility versions, technical documentation for JSON file implementation, and expanded guidance covering Dynamic Creative Optimization rconcludeering scenarios for Article 26 advertising transparency disclosures.
When: IAB Europe published the updated guidelines on December 4, 2025, building on version 1.0 from January 15, 2024, and version 1.1 from May 5, 2025, supporting ongoing compliance with DSA transparency requirements that became fully operational for all platforms on February 16, 2024.
Where: The guidelines apply across the European Union’s 27 member states for online platforms serving EU applyrs, with standardized translations covering major EU languages enabling consistent transparency disclosure implementation across diverse linguistic markets and accessibility necessarys.
Why: Standardized multilingual text templates address industest feedback requesting harmonized disclosure formats reducing implementation complexity while ensuring consistency and clarity across platforms, supporting regulatory compliance objectives under Article 26 DSA requiring real-time advertisement transparency information for every ad displayed to applyrs.
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