Scalr supports Atlantis-style apply-before-merge, PR slash commands (/scalr plan, /scalr apply, /scalr approve, /scalr decline, /scalr ai-explain), 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 only supports merge-before-apply and basic commit statuses.