#Japan #Tokyo #Nielsen #CTV #YouTube

Nielsen Expands Advertising Measurement in Japan

On June 22, 2026, Nielsen, a global leader in audience measurement and media intelligence, announced its expansion of YouTube’s cross-platform measurement in Japan. This new initiative incorporates advanced four-screen duplication removal, spanning across computer, mobile, and connected TV (CTV), enhancing the analytical capabilities for advertisers.

As media buyers increasingly turn to CTV, the newly introduced four-screen duplication removal advertising measurement presents a clearer understanding of YouTube's reach. Advertisers can now more effectively compare advertising outreach between television and various digital platforms. Previously, Nielsen had launched three-screen measurement for YouTube’s CTV advertising across 11 countries before extending its services to Japan. This latest addition empowers media buyers with improved comparability than ever before.

By embracing this advancement, marketers can now more thoroughly gauge their cross-platform media strategies. They can accurately assess unique reach, eliminating duplication both within individual platforms and across different ones. This holistic understanding maximizes the effectiveness of their campaigns.

Matty Lin, Nielsen’s Regional Sales Lead for APAC, stated, "Japan is among the world's most advanced and rapidly evolving media markets. Advertisers are planning comprehensively across television, digital video, and connected TV as part of a unified audience strategy. By enabling the comparison of YouTube reach across various devices, advertisers can comprehensively grasp how their campaigns perform across screens and identify where incremental reach is generated."

As Japanese advertisers strive to balance the expansive reach of television with the growth potential of digital video, reliable independent measurements that remove duplication become essential. The introduction of this advanced measurement represents a significant step towards achieving Nielsen ONE and true cross-media measurement. This initiative will support market participants in planning, optimizing, and evaluating campaigns with greater certainty and consistency.

The launch of four-screen duplication removal advertising campaign measurement in Japan marks an essential development towards true cross-media measurement through Nielsen ONE. By offering accurate and reliable duplication elimination metrics across all platforms, Nielsen aids clients in deepening their understanding of reach, managing frequency, and verifying media spend audience.

About Nielsen

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For Inquiries

Dan Chapman
Associate Director, Communications, Nielsen APAC
Email: [email protected]
Phone: +61 404 088 462

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