Analysis of Migration Strategies for Legacy Software Complexes to Modern Technology Stacks
Keywords:
legacy software complexes, system migration, technology stack, microservice architecture, software modernizationAbstract
The article examines strategies for migrating legacy software systems to modern technology stacks, accounting for architectural constraints, technical debt, hidden domain logic, and organizational dependencies. The aim of the study is to compare the principal transition trajectories, identify the factors shaping strategy selection, and determine the conditions under which migration preserves the operability of critical functions and establishes a foundation for the development of the enterprise digital environment. The study's relevance lies in the growing requirements for integration, scaling, independent component deployment, and the manageability of the engineering lifecycle, which legacy systems often struggle with. The novelty of the article lies in considering migration as a unified architectural, technological, and organizational process in which the choice of strategy is determined by the condition of the source complex, the density of integrations, the value of accumulated logic, and the level of acceptable risk. It is concluded that no universal migration strategy exists and that the greatest resilience is provided by a phased transition based on architectural audit, inventory of data and interfaces, sequential transfer of functions, and control of the integrity of application scenarios. The article will be useful to researchers, software system architects, modernization engineers, and IT transformation managers.
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