42 Development of software and applications for smartphones, computer, server, cloud server, and IOT devices; Technical support, namely monitoring technological functions of smart grid technologies, namely, smart meters and software, modems, repeaters, energy storage systems, RF and PLC concentrators, head-end units and base stations over a range of cellular and RF wireless networks, systems to collect, analyze and act on data transmitted from smart meters and IOT devices; Electronic identity verification services using technology to authenticate user identity, namely, providing user personal identity authentication services using blockchain-based certification technologies and other software technologies being digital identity credentials, decentralized identifiers, software interfaces, and cryptographic keys to create a unique digital identity for conducting financial and commercial transactions; Platform as a service (PAAS) featuring computer software platforms for use in communication, namely, instant messaging, file sharing, and the facilitation of processing payments involving fiat currency and cryptocurrency and tokens and other payment forms through a digitized exchange platform (DEX); Installation of smartphone, computer, server, cloud server, and IOT device software; Technical support services, namely, troubleshooting the customization and localization services for smartphone, computer, server, cloud server, and IOT device software; Turnkey provision of Advanced Metering Infrastructure projects, namely, installation, maintenance and repair of smart grid technologies, namely, software; Providing online non-downloadable software for enabling posting, file sharing and calendaring