Scalr supports Atlantis-style apply-before-merge, PR slash commands (/scalr plan, /scalr apply, /scalr approve, /scalr decline), rich plan and apply summaries posted directly to PRs, state branch awareness that prevents accidental overwrites, configurable commit diff strategies, draft PR skip, and auto-merge of main into dev branches. Terraform Cloud's VCS-driven workflow applies after changes merge to the workspace's branch and reports back to the pull request as a commit status with a link to the run.