Why Upsun is the multi-cloud PaaS technical leaders are choosing in 2026

In 2026, Upsun, formerly known as Platform.sh, has emerged as a favored multi-cloud PaaS among technical leaders, due to its blend of enterprise reliability and AI-ready agility, in a competitive market dominated by cloud giants. Unlike other platforms like Heroku, which face constraints in scalability and geographical deployment, Upsun offers a standardized platform that simplifies the application lifecycle and supports multi-cloud deployment across AWS, Azure, Google Cloud, IBM, and OVHcloud. This capability is particularly beneficial for European enterprises needing compliance with sovereign infrastructure. Upsun's "byte-for-byte" environment cloning allows for precise testing, reducing the risk of deployment surprises, while its Flex pricing model offers transparent cost management. Moreover, as a B-Corp certified organization, Upsun emphasizes sustainability through CO₂ tracking and discounts for hosting in energy-efficient data centers, aligning technical growth with environmental goals.