Integration vs Automation Only

@andyhess @ewanh  We recently purchased new Fusion instances for our environment and when I exported a blueprint from an old instance to a new one the HTTP module was no longer available. In fact the imported blueprint.json would not save as a new scenario and the old instance stopped running ("you are using a premium app ... upgrade your plan") I'm being told the old instance was an "integration" and the new is an "automation only." What is the difference between the two exactly?