DETERMINATION OF SOFTWARE ARCHITECTURE (SOA) AND MICROSERVICE ARCHITECTURE (MSA) USAGE CRITERIA

In modern software development, one of the key tasks is to choose the appropriate architecture for the system in the early stages of its design. This article examines two popular software architecture approaches: service-oriented architecture (SOA) and microservice architecture (MSA). Based on the analysis of architectural features, advantages and disadvantages of these approaches, the criteria that influence the choice of an architectural model depending on the specifics of the system are investigated. Microservice architecture, due to its independence and the possibility of rapid scaling, is better suited for dynamic systems with high requirements for flexibility. Service-oriented architecture, on the contrary, is focused on centralized management of services through ESB (Enterprise Service Bus) and provides better opportunities for integration and reuse of components in large corporate systems that do not require frequent changes in functionality. The main focus of the article is the development of an evaluation method that will allow software developers and system engineers to determine at the early design stages which of the architectures, SOA or MSA, is more appropriate to use for a specific system. Taking into account various technical and requirements, the method identifies key criteria that should be paid attention to when choosing an application software architecture.