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The Page Builder is available out-of-the-box for all new Refined for Confluence Cloud and Refined for Jira Cloud customers. Our existing customers on Cloud get access to the Page Builder in phases, with the possibility to migrate existing page designs from the legacy Layout Editor to the Page Builder:
If you see a green banner in the Layout Editor, you’re ready to get started with edit that page in the Page Builder.
If you don’t see the banner yet but can’t wait to give it a go, request access.