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Marissa Mayer Pivots AI Ventures From Sunshine To Dazzle

2025-09-30Katie Notopoulos3 minutes read
AI
Startups
Marissa Mayer

MArissa mayer at a red carpet Marissa Mayer, former Yahoo CEO and founder of Sunshine (now Dazzle). Credit: Taylor Hill/Getty Images

Former Yahoo CEO Marissa Mayer is making another major shift in the AI landscape. Her startup, Sunshine, which launched the photo-sharing app Shine, is officially shutting down. The team and assets are now being channeled into a new venture named Dazzle, which is reportedly set to tackle the competitive world of AI personal assistants.

The Promise and Stumble of the Shine App

Launched in 2024, the Shine app was designed to solve a common modern annoyance: easily sharing photos with a group of people from the same event. While many options exist, the process can often be clunky. Shine aimed to use AI to simplify this, creating a smart, shared album for loose acquaintances and friends alike.

However, the app failed to gain significant traction. Despite the clear utility of solving the photo-sharing puzzle, the market didn't seem to embrace the solution offered by Mayer's company, Sunshine.

A Shift in Vision Amid Internal Challenges

The pivot from Sunshine to Dazzle follows reports of internal turmoil. According to a detailed report from WIRED, internal emails confirmed that Sunshine is shutting down, with its assets and employees transferring to Mayer's new company, Dazzle.

This move came after several red flags at Sunshine. The company's cofounder, Enrique Munoz Torres, quit just days after the Shine app was announced. Furthermore, a report by Casey Newton and Zoë Schiffer for Platformer highlighted employee frustration with the work culture and what they described as a wandering vision.

The app evolved as Mayer tested it out with friends and family on vacation or at parties, employees said. Product changes were "explicitly about her social life," one employee said.

In January, Mayer and her family went on a ski vacation in Wyoming. Mayer's friend took some selfies on the trip — and was embarrassed when the photos automatically uploaded to a shared album on Shine, which Mayer had presumably created.

When Mayer returned to the office, she told employees that photos taken with the front camera that only contained a single face should be excluded from shared albums.

Dazzle Enters the Crowded AI Assistant Arena

With Sunshine's chapter closing, Dazzle represents a fresh start. A spokesperson for the new company told Business Insider, "As Sunshine's largest investor, shareholder, and CEO, Marissa is proud of what the team built and looks forward to carrying that momentum into new opportunities around Dazzle."

While an AI personal assistant is a compelling product, Dazzle is entering an incredibly crowded field. It will have to compete with established giants whose services are already integrated into smartphones and a host of other well-funded startups. The challenge will be to offer a unique value proposition that can carve out a niche in a market dominated by existing players. The tech world will be watching to see if this pivot can dazzle where the previous venture failed to shine.

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