If you and your team are moving from Confluence Server or Confluence Data Center to Confluence Cloud (or from Cloud to Server / Data Center for that matter), you’re likely wondering how your marketplace apps will behave after migration and whether they are compatible.
Since the main functionality of GitHub Gists in Confluence is a macro with the same name and same macro parameter names, any Confluence content with these macros present these should be migrated without problems.
There is no impact. Your end users will continue to see the same content rendered in the same manner.
The features are exactly the same.
No. This app is currently free on both Server/Data Center and Cloud.