Few questions here to understand more about AEM Forms that was difficult to find as a consolidated view on AEM forms technical view in this help page https://helpx.adobe.com/aem-forms/6/getting-started.html
1) How does AEM Forms / Adaptive forms manages form data ?
1.1) Is this managed via reverse replication to author and replicated to other publish instances in case of more than 1 publish instance ?
2) When ever processing of data required
2.1 ) is this managed via separate processing AEM instances that is connected to a live cycle instance ?
2.2) Can we assume he also data is reverse replicated and then stays only with processing instance ?
2.3)What is the use case of this kind of AEM forms & Live cycle?
2.4) Why do we need a processing instance and why not continue with authoring instance alone
3) How does AEM forms manage from entry state in case of multi publish instance ?
4) What are the OOTB adaptive nature of AEM forms ? like device detection and content rendering - pdf vs html
Too many Q's :) I will try to answer them. In the mean while can you have a look at the video series here - http://tv.adobe.com/watch/adobe-experience-manager/overview-of-adaptive-forms/ , https://www.youtube.com/watch?v=0OivXb6hb-Q
I hope some of your doubts would be cleared by this. Please get back with your doubts after watching this.