An AIO (All-in-one) vape is a vaping device in which the tank is a permanent part of the device instead of being screwed into the device as would be the case with a full vape mod. There are two types of AIO devices. With one type, the device itself stores the e-liquid. At the top of the device, there’s essentially a glass cup. With that configuration, it’s impossible to remove the tank from the device. With the other type, the tank’s outer enclosure is secured to the device by a silicone o-ring and is removable. An AIO vaping device only works with its own built-in tank. A pod system isn’t technically an AIO vape because the pod is a self-contained removable component that stores your e-liquid and includes the atomizer coil as a built-in component. When you remove the pod, you’re also removing the e-liquid and the atomizer coil. An AIO vape doesn’t work that way.