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Legacy Application Migration Services to Modernize & Future-Proof Your Systems
KISS Software provides secure migration of legacy applications with full audit, refactoring, transition to modern technologies, and integration with new platforms. We update business logic, UI, and architecture — delivering a secure, high-performance solution ready for scaling.
Why KISS Software is your migration partner
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10+ years of experience in software modernizationMigration without data loss or downtime
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Flexible approach: from refactoring to full replacement
We work with legacy, on-premise, and cloud systems
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Improved security, performance, and UX
Modern architectures built for scalability
What we will do for you
Audit of the current system and risk assessment
We analyze the codebase, architecture, dependencies, and vulnerabilities. Identify components that require refactoring or replacement.
Migration plan with preserved business logic
We retain critical logic, data models, and workflows. Build a phased migration roadmap without functionality loss.
Refactoring or rebuilding on a modern tech stack
Modernize architecture, select a new stack (Node.js, React, .NET, etc.), and significantly improve performance.
UI and UX modernization
Redesign and adapt interfaces to modern devices and standards. Better usability, readability, and responsiveness.
Integration with APIs, cloud, and services
Connect new services, databases, microservices, and cloud platforms. Ensure stable and secure integrations.
Testing, deployment, and support
Migration without downtime. Full testing, smooth release, post-launch support, and team onboarding.
Move from legacy systems to modern architectures without data loss or downtime
Custom migration tailored to your stack and business goals
Testimonials
Мы заказывали у KISS Software анимацию для 2D-платформера. Ребята сразу поняли нашу стилистику, предложили интересные решения по эмоциям персонажей, а результат превзошёл ожидания. Игроки отмечают именно «живость» анимации. Будем работать ещё.
Андрей
гейм-дизайнер
Нужно было подключить аутсорс на этапе риггинга и внутриигровых синематиков под Unreal Engine. KISS вошли в проект аккуратно, без долгих вводных, всё отдали в срок, багов — ноль. Отличная техничка, быстрая реакция и понимание продакшн-процесса.
Михаил
продюсер, студия разработки игр
Уже третий проект делаем с командой KISS — всегда всё прозрачно, по делу и вовремя. У них реально хорошее чувство гейм-драмы и движущейся композиции. Отдельно ценим их подход к оптимизации под мобильные платформы.
Денис
CEO
Application migration stages
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Migration analysis and planning
Analyze the legacy system, identify key business processes and dependencies. Build a migration roadmap with risk assessment, timelines, and technologies. Define areas for refactoring or replacement. Align priorities, stack, and architecture.
Time to deliver
~ 1-2 days
Infrastructure and environment setup
Deploy new infrastructure: cloud platforms, CI/CD, dev/stage environments. Configure secure storage and databases. Isolate old and new systems. Prepare automated data migration tools with rollback capabilities.
Time to deliver
~ 2-4 days
Refactoring and logic adaptation
Rewrite outdated code while preserving business logic. Modernize architecture to current standards. Apply modular design for flexibility and scalability. Migrate to modern languages or frameworks. Ensure testability and documentation.
Time to deliver
~ 3-7 days
User interface modernization
Build a new UI using modern frameworks (React, Vue, Angular). Improve navigation and responsiveness. Ensure accessibility and mobile support. Align design with corporate branding. Conduct UX testing with real users.
Time to deliver
~ 5-15 days
Integrations and service configuration
Configure integrations with external APIs, cloud services, and microservices. Update data exchange protocols. Implement access control, monitoring, and logging. Perform load and security testing.
Time to deliver
~ 2-4 days
Launch, support, and evolution
Seamless switch to the new system without downtime. Train your team and deliver documentation. Provide ongoing support, bug fixes, and iterative improvements. Enable metrics, feedback, updates, and DevOps processes.
Time to deliver
~ 1-2 days
Technologies and tools we use
Java
Javascript
MySQL
PHP
Java
Javascript
MySQL
PHP
FAQ
Yes. We use phased migration strategies that avoid downtime for end users.
We analyze and document them, then either adapt or rewrite modules as needed.
Through encryption, authentication, access audits, and secure DevOps practices.
Yes. We remain available for updates, improvements, and technical support.
