CLIENT TIER EDGE / CONTROL PLANE MICROVM WORKERS STORAGE TIER CONNECT/CLOSE MAINTAIN POOL ASSIGN VM FS MOUNT READ BLOCKS SAVE STATE IOS APP CONTROL PLANE VM POOL (IDLE) ASSIGNED VM JUICEFS CLIENT S3 STORAGE User taps Resume or closes the iOS app. Routes requests and manages the lifecycle of Kata VMs. Warm pool of 3 empty VMs ready for instant assignment. Stateless Kata microVM. Terminated when app closes. Mounts S3 bucket locally to provide node_modules to VM. Safely stores app state and filesystem blocks.