Gabby Stoller is Chief Revenue Officer of Big Happy, a creative-first, CGI-powered ad tech platform ('the Pixar of digital advertising') spanning mobile and digital out-of-home. She joined in mid-2025, leaving Walmart Connect — the retail media network of the number-one Fortune company, where she spent nearly five years leading complex CPG and food verticals and was among the first 20 people on a food team that grew past 400 — to build Big Happy's digital-out-of-home division from the ground up as GM, then moved into the CRO seat within six months. Before Walmart she built her career across the entire ad stack: Yahoo, The New York Times, Verve, Placed, and Vistar Media, giving her a publisher, platform, retail-media, and ad-tech vantage point. Her thesis: creative is the highest-leverage lever in advertising — every ad is a blank canvas — and the operators who win pair great creative with speed, omni storytelling, and a lean, ops-backed go-to-market.
“Walmart Connect was the most incredible experience. I genuinely feel like I got my MBA, and I got paid to work there at the same time.”
“Creative tends to be a bit of an afterthought after spending so much time on audience design.”
“We take that creative-first mindset that every ad is a blank canvas.”
“If you're using the same creative to speak to all those different audiences, what's the purpose?”
“Great creative is what makes you stand out and minimizes all the fragmentation on that noise.”
“Doing it as managed service allowed us to fail and then win, fail and then win, and eventually, just winning.”
“We basically slated three months for go-to-market, and we were live within less than 60 days.”
“Everything we do sits on this proprietary tech stack that lets us render and compress at scale and do it really turnkey. That's our secret sauce, that's our bread and butter.”