Beyond the legacy PaaS: choosing between Heroku and Upsun in the 2026 cloud ecosystem

In the evolving landscape of Platform as a Service (PaaS), Heroku's recent decision to halt new enterprise sales marks a pivotal shift as it maintains existing services without plans for feature enhancement, prompting businesses to consider alternatives like Upsun. Heroku's fixed-tier pricing and focus on a single-stack have led to potential stagnation, with enterprises facing challenges in scalability and advanced feature integration, such as AI and multi-cloud capabilities. Upsun emerges as a compelling alternative by offering a Git-based workflow, granular resource control, and multi-cloud deployment options, allowing enterprises to scale horizontally and vertically without the constraints of legacy PaaS models. It addresses modern IT needs by providing production-perfect previews, improved governance through Infrastructure as Code (IaC), and enhanced compliance standards, thus reducing operational toil and costs. As organizations seek to transition, Upsun offers assistance with strategic assessments and migration support to facilitate a seamless move from Heroku, promising improved flexibility, developer autonomy, and cost efficiency.