Additional apps in cloud

In your Cloud instance, if needed

document management and approvals will require the Comala Document Management for Confluence Cloud app
Read Confirmations will require the Read Confirmations for Cloud app

For third-party app integrations you may wish to use please refer to the vendor product documentation for availability of the app in Cloud and if available, its feature set and functionality.

There are also a number of page macros that may not be available in cloud or may have different features and functionality. These may be from third party providers. Or you may need to review your requirements if these are not available.