A METHOD FOR SELECTING THE ARCHITECTURE OF LLM, RAG, AND AI AGENT DEPLOYMENT IN CORPORATE INFORMATION SYSTEMS AND DECISION SUPPORT SYSTEMS

Authors

DOI:

https://doi.org/10.14529/ctcr260301

Keywords:

large language models, LLM, Retrieval-Augmented Generation, RAG, AI agents, corporate information systems, decision support systems

Abstract

Purpose of the study. The purpose of the study is to develop a method for selecting the deployment architecture of LLM subsystems, Retrieval-Augmented Generation (RAG) solutions, and AI agents in corporate information systems and decision support systems. The study is relevant because in the enterprise environment the choice of an intelligent subsystem depends not only on generation quality, but also on explainability, controllability, integration depth, work with corporate data, acceptable autonomy, and the cost of error. Materials and methods. The study uses system and comparative analysis, architectural modeling, classification, expert decomposition of criteria, and elements of multicriteria decision-making. Five architectural classes are considered: an isolated LLM subsystem, a RAG-based subsystem, an LLM contour with tool access, an agent-based intelligent subsystem, and a hybrid controlled architecture. Comparison criteria include task type, dependence on corporate context, need for actions in external systems, requirements for accuracy, explainability and auditability, data sensitivity, enterprise environment maturity, and acceptable autonomy. Results. A semi-formal architecture selection method is proposed. It combines filtering and ranking criteria, weight adjustment, and the possibility of determining an intermediate architecture when data and integrations are insufficiently mature. The method is implemented as a reproducible procedure including task profile formation, filtering by critical constraints, evaluation of admissible architectures, and refinement of the choice according to enterprise maturity. Its applicability is demonstrated using scenarios of a trade-and-production enterprise: access to internal regulations, managerial reporting, recommendation generation for a standard customer request, and multi-step handling of an internal incident. Conclusion. There is no universal deployment architecture for an intelligent subsystem in corporate information systems and decision support systems. A rational choice is determined by technological, organizational, infrastructural, and managerial factors. The proposed method can be used for preliminary design and phased development of intelligent subsystems in organizations focused on automating managerial and information-analytical processes.

Author Biographies

Oleg V. Loginovskiy, Южно-Уральский государственный университет, Челябинск, Россия

Dr. Sci. (Eng.), Prof., Prof. of the Department of Information Systems and Technologies, South Ural State University, Chelyabinsk, Russia

Alexander V. Hollay, South Ural State University, Chelyabinsk, Russia

Dr. Sci. (Eng.), Prof., Prof. of the Department of Information Systems and Technologies, South Ural State University, Chelyabinsk, Russia

Sergey A. Brazhenko, South Ural State University, Chelyabinsk, Russia

Postgraduate Student of the Department of Information Systems and Technologies, South Ural State University, Chelyabinsk, Russia

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Published

2026-09-11

Issue

Section

Informatics and Computer Engineering