Spin up a full-stack preview environment in seconds, zero config
Blog post from Upsun
Upsun’s zero-config preview environments automatically create a full-stack, production-like environment whenever a developer opens a branch or pull request, using project-level YAML configuration established once rather than requiring setup for each branch. Each preview includes application code, a cloned database, search index, dependent files, and a shareable URL, allowing reviewers, QA teams, and product stakeholders to test changes in a running application rather than relying solely on code diffs. Environments rebuild when new commits are pushed and are removed when branches are merged or closed, while those inactive for 14 days pause automatically to reduce unused resource costs. The service supports native integrations with GitHub, GitLab, Bitbucket, and their self-hosted versions, with other Git providers supported through CI-based automation, and it positions automated previews as a way to accelerate reviews, expose full-stack issues earlier, and simplify adoption for new developers.
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