We migrated the sites from 5.6.1 to 6.3 in the similar approach instead of upgrade. I would recommend to use CRX2OAK. I have an article on my blog about thisAdobe – CQ to AEM – Repository Migration – sree's WORLD

AWS is currently in use by many firms (I can't name them - unofficially I know at-least 3 Multi Billion Dollar firms) for their AEM architecture.AndrewC_EA - Auto-Scaling can be achieved when Architecture for AEM has the right instance type defined with the usage scenarios. Publish plays a vital rol...