The article is devoted to the application of systems analysis methodology to the study of application server architectures. The principles of the systems approach are considered in relation to software platforms. A classification of architectures is proposed based on the degree of distribution, component organization principles, request processing methods, and applied architectural patterns. A component-based analysis of a typical multi-tier architecture is carried out, identifying functional relationships and interaction mechanisms between elements. Evaluation criteria for application server architectures from the perspective of systems analysis are defined, including performance, scalability, availability, and modifiability. Methods of decomposition and architectural patterns are examined in the context of their systemic properties, providing a basis for a justified selection of design solutions depending on the requirements of specific tasks.

Keywords: system analysis, application server architecture, architecture classification, component analysis, architectural patterns, system decomposition, architecture evaluation criteria