Recently we are in the middle of structural changes toward software-defined ICT infrastructure, which attempts to transform the existing silo-based infrastructure into futuristic composable one by integrating IoT-based smart/mobile things, SDN-coordinated interconnect edges, and NFV-assisted and software-driven cloud core. This end-user-driven infrastructure transform can be supported by diverse open-source community projects (e.g., Linux Foundation’s OVS/OpenSwitch/ONOS/CORD/ODL/OPNFV/Open-O/…, Facebook-initiated OCP, and others). Aligning with this upcoming transition, in this talk, the prototyping experience of OF@KOREN & OF@TEIN SmartX playgrounds will be shared by focusing on the hyper-convergent SmartX Boxes. Then, for multisite edge clouds, the on-going design trials of affordable SmartX K-Cluster will be explained. Finally, by leveraging DevOps-based automation, preliminary prototyping for IoT-Cloud services will be discussed by taking an example service scenario for smart energy.