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Erin Niimi Longhurst

Operator

Erin Niimi Longhurst is recognized in the AdTech industry for her work at the intersection of publisher monetization, privacy-compliant targeting, and programmatic strategy. At Permutive, she leads commercial strategy and publisher partnerships, helping major media owners and broadcasters build sustainable, first-party data-driven advertising businesses that do not rely on third-party cookies. Her work is particularly significant as the industry navigates the deprecation of legacy identity infrastructure and the rise of privacy regulation globally. Niimi Longhurst has built a reputation as a thoughtful operator who bridges the gap between technical data capabilities and commercial outcomes for publishers. She works closely with Permutive's publisher clients to develop cohort-based audience targeting strategies that satisfy both advertiser demand and regulatory requirements under frameworks such as GDPR and the UK's data protection regime. Her role requires deep fluency in programmatic buying mechanics, identity resolution approaches, and the evolving standards landscape around consent and data activation. Beyond her commercial role, she is also known publicly as an author, having written about Japanese culture and wellbeing, which gives her a distinctive profile that spans both the media-tech world and broader cultural commentary. Within AdTech specifically, she is regarded as a credible voice on publisher data strategy and the commercial viability of privacy-first approaches to audience monetization.

Last updated Jul 10, 2026 by ATDb automated enrichment · Connections updated Jul 13, 2026

Role
VP, Commercial Strategy & Partnerships
Company
Based
London, United Kingdom
Years in industry
8 years

Bio

Erin Niimi Longhurst is recognized in the AdTech industry for her work at the intersection of publisher monetization, privacy-compliant targeting, and programmatic strategy. At Permutive, she leads commercial strategy and publisher partnerships, helping major media owners and broadcasters build sustainable, first-party data-driven advertising businesses that do not rely on third-party cookies. Her work is particularly significant as the industry navigates the deprecation of legacy identity infrastructure and the rise of privacy regulation globally. Niimi Longhurst has built a reputation as a thoughtful operator who bridges the gap between technical data capabilities and commercial outcomes for publishers. She works closely with Permutive's publisher clients to develop cohort-based audience targeting strategies that satisfy both advertiser demand and regulatory requirements under frameworks such as GDPR and the UK's data protection regime. Her role requires deep fluency in programmatic buying mechanics, identity resolution approaches, and the evolving standards landscape around consent and data activation. Beyond her commercial role, she is also known publicly as an author, having written about Japanese culture and wellbeing, which gives her a distinctive profile that spans both the media-tech world and broader cultural commentary. Within AdTech specifically, she is regarded as a credible voice on publisher data strategy and the commercial viability of privacy-first approaches to audience monetization.

Career

  • Commercial roles in media and publishing

    Various · Prior to Permutive

Expertise & education

Expertise

First-Party Data StrategyProgrammatic AdvertisingPublisher MonetizationPrivacy-Compliant TargetingCohort-Based AudiencesIdentity ResolutionGDPR & Data Privacy RegulationAudience Data Activation

Speaking topics

Privacy-first advertising and the future of publisher monetizationFirst-party data activation in programmatic environmentsCohort-based targeting as an alternative to third-party cookiesPublisher and advertiser collaboration in a cookieless world

Recognition

Notable achievements

  • Led commercial partnerships at Permutive helping major publishers and broadcasters transition to first-party data monetization strategies ahead of third-party cookie deprecation
  • Published author on Japanese culture and wellbeing, bringing a distinctive cross-disciplinary public profile to her AdTech leadership role

Publications

  • Japonisme: Ikigai, Forest Bathing, Wabi-sabi and more (author, non-AdTech)