Development, updating and maintenance of computer applications software for generating AI-based backend code; development, updating and maintenance of software for code generation for LLM(Large Language Model)-based server programming; development, updating and maintenance of software for providing LLM(Large Language Model)-based AI services for text analysis; development, updating and maintenance of software for providing LLM(Large Language Model)-based AI services for text generation; providing non-downloadable computer software for retrieval-augmented generation; providing paas (platform as a service); development, updating and maintenance of software and database systems; research and development services in the field of artificial intelligence; providing PaaS (Platform as a Service) featuring intelligent data services using artificial intelligence, machine learning and deep learning; computer and computer software rental.