An increasing number of systems span from the data-center down to the micro-controller and need to smoothly operate across this continuum composed of extremely heterogeneous network technologies and computing platforms. Building these systems is quite challenging due to the limitations of existing technological stacks. This presentation introduces Zenoh, a Sub/Sub-/Query protocol that unifies data at rest, data in motion and computations. Zenoh has been designed ground-up to address the needs of the cloud to micro-controller continuum. It has a minimal wire overhead of 5 bytes, it runs and performs on constrained as well as on high-end networks and hardware.