Alfresco Content Services 6.0 or later.
Salesforce Group is the minimum requirement. See Salesforce Connected Apps for guidance on levels of Salesforce required with connected apps.
OpenJDK 11 or Java 8 for Alfresco Content Services 6.1 and above.
Java 8 for Alfresco Content Services 6.0.
Your Salesforce and Alfresco instances must be on a shared network or otherwise accessible in order to share information.