AN INTEGRATED APPROACH TO EVALUATING PAAS AND FAAS ARCHITECTURES IN HIGH-LOAD SYSTEMS
DOI:
https://doi.org/10.28925/2663-4023.2026.33.1233Keywords:
Cloud Computing, Serverless, FaaS, monolithic architecture, AWS Lambda, microservices, STRIDE, FinOps, load testingAbstract
This article presents a comprehensive study of architectural patterns for building high-load web systems in a cloud environment. A comparative analysis of the classic monolithic architecture (PaaS) and serverless architecture (FaaS) is conducted based on performance, cost efficiency, and information security criteria. Two functional prototypes of an order processing system were developed and tested using Amazon Web Services (AWS). It was experimentally established that a serverless architecture allows for a reduction in operating costs by 75–99% for systems with uneven traffic, but it introduces an additional "cold start" delay of up to 1.42 seconds. A decision-making matrix is proposed for choosing a technology stack depending on business requirements and the threat profile.
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Copyright (c) 2026 Андрій Горпенюк, Наталія Лужецька, Микола Горпенюк, Олександр Горпенюк
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