Its not about 'directly manage servers' i think. You still have a conceptual view of a single server(rails server) that is serving your requests. In serverless

Its not about 'directly manage servers' i think. You still have a conceptual view of a single server(rails server) that is serving your requests. In serverless you have bunch of servers that are serving requests for all apps that are deployed to them. Your specific app is not pinned to a conceptual server.