Does it require a cloud service to operate? Will it work if I put it on a WiFi network that can't access the internet? Does it present an MJPEG stream that I

Does it require a cloud service to operate? Will it work if I put it on a WiFi network that can't access the internet? Does it present an MJPEG stream that I can consume with other tools to do recording and monitoring locally? My current cameras meet all this criteria. They've got a cloud service available, but they work just fine even if they are unable to phone home.