In wide-area distributed systems based on 5G and Beyond 5G mobile communication systems, we can now flexibly utilize computing resources deployed in the network such as MEC (Multi-Access Edge Computing) servers. However, constructing a high-quality IoT system is still challenging, e.g., dealing with a wide variety of devices, various types and amounts of data, and different processing methods. We are developing an IoT platform in Elixir, named "Giocci". This platform realizes the features below to empower developers. 1) Transparent use of computing resources (edge-side, MEC, cloud) 2) Node-to-node access methods 3) Data storage and sharing This talk will introduce you to the Giocci world. - Giocci's concept and architecture - The efficient inter-node communication derived from Zenoh - The motivational example application for Giocci that employs an object detection model (YOLOv3) running on SRv6 MUP in the commercial 5G network powered by SoftBank We aim to discuss Elixir and BEAM's potential in developing wide area distributed IoT systems.