Cloud Computing and IoT Association in Taiwan (CIAT) currently has more than 180 member companies jointly creating the most complete industry chain in information and communication technologies. Member companies include Nonprofit R&D Organization, industry leaders in telecommunications, major hardware manufacturers and software developers as well as vendors in systems integration and services. Since establishment, CIAT has facilitated the Taiwan Data Center's structural transition as it pivots from hardware to systems solutions and software services, solidifying the industry's cloud system platform, which integrates high-level hardware and software. CIAT has thus enabled Taiwan to become the bedrock of innovation in cloud computing technology as well as leading the domestic cloud computing industry to the international stage. A very long industry chain is the unique facet of the development from IoT to cloud computing. In response to the needs of members, CIAT established Special Interest Groups (SIG) to focus on IoT security, Artificial Intelligence (AI) , XR (Extended Reality) Digital Twins, LEO-based Satellite IoT, Beyond 5G IoT Application and Cloud Valley Incubation. The SIGs consolidate multi-faceted industry needs, such as relevant government policies, business models, and technological development, to arrive at specific policy proposals or joint development project proposals, while functioning as an important platform to study the industrialization of technology between legal entities and their industries. In short, CIAT focuses on the industrialization of technology and the promotion of systems and services based on a user-oriented approach, to stay ahead of the competition and redefine the cloud IoT industry chain in Taiwan.