Based on your planning review and needs, you may need to add and configure additional apps for your cloud instance.
For example
management and approval of documents will require the Cloud Document Management for Cloud app
Read Confirmations will require the Read Confirmations for Cloud app
For third-party app integrations refer to the Comala Publishing Cloud product comparison and the Atlassian Marketplace for a cloud iteration of any required third-party apps.
Refer to the vendor product documentation for the availability of each of your server apps in Atlassian cloud, and if available, review its feature set and functionality.