Design and development of computer software; Design and development of computer software for the improvements of purchasing functions of business; Design and development of computer software for utilizing blockchain technology to manage inter-enterprise payments; Design and development of computer software for inter-enterprise payments, settlement, and accounting; Developing customized software for others; Developing customized software in the field of blockchain technology for others; Software as a service (SAAS) services featuring software for managing inventory, pricing, marketing, booking, transactions, and supply chains in the travel and entertainment industries; Platform as a service (PAAS) featuring computer software platforms for managing inventory pricing, marketing, booking, transactions, and supply chains in the travel and entertainment industries; User authentication services using blockchain technology for managing travel and entertainment expenses