The company began as Commerce Guys in 2009, building online shops on open-source tools. Fred Plais led it, and the team kept running into the same problem: getting a new feature from a laptop to a live site meant fragile staging servers that never matched production.
In 2015 the team spun out the tool it had built for itself as Platform.sh. Plais became CEO and Ori Pekelman became co-founder and chief strategy officer. Each Git branch got its own full copy of the live environment, data and services included.
Funding followed. Platform.sh announced a $34 million Series C in 2018 and a $140 million Series D in 2022. It has raised more than $180 million in equity.
In 2025 the company became Upsun. The new positioning aims at developers and AI tools that need an exact copy of the real environment to deploy reliably. Competitors include Heroku, Vercel, Netlify, Render and Fly.io.