Minor nit: functions as a service are almost exactly this - and they (from a technical perspective) don’t wait to be called, they pop into existence just in tim

Minor nit: functions as a service are almost exactly this - and they (from a technical perspective) don’t wait to be called, they pop into existence just in time. Arguably though it’s not special tools is just different tools. You usually can’t run a debugger live in production but with tools like distributed tracing and service meshes you get really close