Marie-Clare Puffett

Marie-Clare Puffett

Industry Development & Insights Director IAB Europe

Marie-Clare is the Industry Development & Insights Director for IAB Europe. Marie-Clare has spent 10+ years in the digital advertising and marketing industry leading collaborative projects, research, and events. She is tasked with driving IAB Europe's industry engagement and initiatives within Retail Media as well as owning the association’s industry research and insights outputs and roadmap.

Day 1 | 8th September

3:00 PM Fireside Chat: Beyond the buy button: How can you build brand equity through retail media while accurately measuring incrementality?

Retail media isn't just sponsored search ads. With retailers' first-party data now activatable across premium streaming, audio and Twitch, it's become a precision upper-funnel channel for net-new demand. Yet proving its true, cross-network incrementality remains the industry's hardest problem. This session reframes retail media as a brand-building channel and confronts the measurement gap head-on, drawing on Croud's partnership with Amazon and the real-life experience of advertisers.

  • Why retail media is not just about lower-funnel search ads, but is a powerful brand-building channel — reaching precise audiences on premium streaming, audio, Twitch and beyond with retailers' first-party data
  • Why true incrementality is so hard to prove across walled-garden networks — and how advertisers and agencies can work to overcome this
  • How clean-room modelling via Amazon Marketing Cloud and first-party data integration help to dedupe new-to-brand and reveal each channel's real value 

3:55 PM Workshop 4: By Invitation Boardroom – The conversations we never have: An honest start to Retail Media Pioneers 2026

A candid, closed-door boardroom designed to set the tone for the day — open, honest, guard-down conversations with the people who live retail media every day. 

  • Guided by trigger prompts such as "The one thing brands don't understand about us…", "The truth about our data quality is…", and "If I could change one thing about RMNs…", this session surfaces the realities we rarely say out loud.
  • A peer-led honesty circle where leaders share mistakes, failed experiments and lessons learned — helping the room build trust and level up together.
  • Designed to break silos, accelerate connection and set the tone for the event's USP: real talk, human vulnerability and industry collaboration without the polish. 

5:10 PM Panel Discussion: How can internal teams align to build a unified retail media strategy?

  • Hear how to align internally to build a shared understanding of retail media's role — shifting it from a siloed line item to a strategic, cross-functional growth driver 
  • Learn how leaders aligned on measurement, reporting cadence, and KPI definitions (e.g., ROMO vs ROAS) to create budget frameworks that satisfy finance while enabling marketing agility 
  • Discover how they redesigned planning cycles, removed internal friction between trade and brand budgets, and created one narrative that unlocked organisation-wide confidence in retail media investment

Check out the incredible speaker line-up to see who will be joining Marie-Clare.

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