Metaverse" has become a complete buzzword, but what exactly is metaverse? To answer this question, I'm going to tweet what I said at a WIRED conference in the past. First of all, the metaverse is, in a nutshell, the Internet in three dimensions. In the age of the metaverse, three-dimensional services such as Fortnite, Minecraft, Roblox, etc. will exist as web services, and we will be able to communicate and conduct economic activities on these platforms while moving back and forth betwee...