After many, many, many years with vBulletin (as in from the days of 3.2) it seems to have come time to move to new commercial forum software. I've read too many stories about vBulletin 5 Connect being a death sentence on communities and the code quality has dropped substantially since vBulletin 3 days. Rather than remove depreciated PHP methods and cleanup the code, vBulletin opts to hardcode in the disabling of the warnings for the depreciated methods and it runs like a train wreck on PHP 7. I have spoken to a number of administrators from both small and large communities and most have been looking towards XenForo (others to IP.Board or MyBB) but it seems like XenForo is the "spiritual successor" to vBulletin 3. I only have a few questions as I have been reading up on XenForo for quite a while now. People seem to describe the "engagement" going up after moving to XenForo. I can understand this due to its ease of use but this could also be simply that people want to use the "shiny" new thing - have people witnessed continued higher engagement rates within their own community over the long term? How's SEO with XenForo? One of the problems with vBulletin over the many licenses we have is that it's not very good when it comes to SSL (i.e. strange bugs pop up only effecting vBulletin such as making "www." a completely unusable experience). How's XenForo with SSL? Does XenForo natively use MariaDB engine tables such as Aria or must the tables be converted from the more standard MySQL tables? Back to MySQL, does XenForo work with MariaDB 10.1? How are loads with XenForo? While we have systems with 48+ threads to back up a forum, getting a little performance benefit wouldn't hurt either. Adding to XenForo loads, does it integrate well with CDNs? We use the Verizon Enterprise Anycast Edge Network for serving a lot of the static content and that's the basic first layer of caching. How's PHP 7 support? Does XenForo expose feeds similar to vBulletin so that we can take the conversations on forums and have them displayed on totally different software? Does XenForo have an API that can be used to call up a non-XenForo account system? I'm assuming "yes" because three OAuth account types are available to sign in with on this forum. Anyone with experience working with the makers of the UI.X skin? It seems they are the best firm to partner with for a design project and adapting UI.X would be fairly simple. I'm sure I will think of something else but for now: that's it.