
After helping scale adtech, modernize a flower business and turn motherhood into an operating credential, Christina Cubeta is asking a harder question: what should marketing preserve when machines begin making the buys?

From Windows 3.0 migrations to Ford's digital showroom and Viant's AI-era advertising platform, his work keeps returning to one stubborn question: did the marketing actually work?
The ad-tech veterans behind Scope3 built a carbon meter for the internet's advertising pipes. Four years and $45 million later, they are turning that map into an AI marketplace - with real budgets, open standards and a hard question about who gets to make the buy.
Good-Loop is an ethical advertising technology company that turns ad spend into a force for good. Its 'view-to-donate' formats let people unlock a free charitable donation - funded by the advertiser - simply by choosing to watch an ad, while its Green Media tools measure and cut the carbon footprint of digital campaigns. A certified B Corporation founded in Edinburgh in 2016 by Amy Williams and Daniel Winterstein, Good-Loop has raised more than $6M for charities including Save the Children, WaterAid and WWF, and works with brands such as Unilever, Nestle, Levi's and Asics.
Olyns is a California-based climate-tech company that builds the Olyns Cube, an AI-powered reverse vending machine that lets shoppers recycle beverage containers at retail locations in exchange for cash refunds or rewards. Each Cube doubles as a digital advertising screen, so revenue from brand ads funds the cost of collecting and sorting material - making consumer recycling profitable and scalable without relying on the low value of the plastic itself.
Picnic is a London-born ad-tech company building user-first advertising for the open web. It packages social-media-style ad formats - Stories, swipe-to-act, emoji reactions - and delivers them on premium publisher inventory, aiming to make ads people actually engage with rather than ignore. Founded in 2017 by Matthew Goldhill, Picnic pairs its creative formats with PIQ, an inventory-quality platform, and ships every campaign carbon neutral, claiming roughly 50% lower emissions than the industry standard.
Matthew Goldhill is the founder and CEO of Picnic, a London-born adtech company that pioneered 'social display' advertising - Stories, Posts and Carousels dropped mid-article on Google AMP pages, a format that didn't exist before he built it. He left AppNexus at 25 to start the company, bootstrapped it for years, delivered 600+ campaigns for brands like EE, L'Oreal and Amazon, then raised £1m in 2023 and moved to New York to crack the US market. He builds user-first, low-carbon ad products and is unusually candid about the near-disasters along the way.