Business logic was never resolved
A feature list stood in for requirements analysis, leaving roles, objects, rules and exception paths only partly identified.
Business Systems & Legacy Modernization
Turning complex business processes
into clear, working systems
From requirements analysis and architecture design through to development and launch, we build software that fits your organizational roles and processes, while steadily advancing legacy refactoring, migration and AI enablement.
MaintainableExtensibleEvolvable
Requirements & planningBusiness processesSystem architectureMigration & integrationLaunch & operations
What we solve
Requirements look clear —
yet delivery keeps circling back.
For enterprises building complex business platforms, or whose current systems can no longer keep up with business change, integration and AI demands.
Legacy systems hold things back
Aging architecture, difficult maintenance and fragmented data slow every new request, while migration raises fears of disrupting the business.
Delivery disconnected from operations
Systems go live but lack monitoring, documentation, iteration mechanisms and knowledge transfer, leaving maintenance dependent on individuals.
What we provide
Start from the business structure,
build systems that can keep evolving.
We take on new system builds, and equally start from a legacy assessment, a module upgrade or a single process.
Requirements analysis and system planning
We identify organizational roles, business objects, key rules, main flows and exception paths to set a clear delivery boundary.
Enterprise web platforms and industry applications
Complex systems for management, operations, compliance, laboratories, energy and industry.
Complex workflows, permissions and collaboration
Multi-role permissions, process states, business rules, notifications and end-to-end traceability.
Legacy refactoring and module upgrades
We assess architecture and code, then refactor, replace or extend in stages ordered by risk and value.
Migration, domestic stack adaptation and AI
Data migration, system cutover, domestic technology stack adaptation and AI capability upgrades for existing systems.
Delivery standards
Launching on time is not enough —
it must stay maintainable and keep evolving.
Delivery standards cover business fit, architectural quality, operational stability and migration continuity.
Fits the business
Core roles, processes, rules and exception paths are confirmed and fully executable in the system.
Requirements baseline · Acceptance scenariosMaintainable architecture
Module boundaries, interfaces, code and deployment are clear, with the necessary technical documentation.
Architecture docs · Code standardsStable in operation
Key functions carry logging, monitoring, permissions, security and exception handling.
Monitoring plan · Test reportsControlled migration
Cutover, data migration and rollback paths are planned and validated to limit business disruption.
Migration plan · Cutover checklistWhy SIHENGTAINUO
Before building the system,
we genuinely learn the business.
We handle requirements and architecture as well as core engineering, avoiding the loss that occurs when proposal, design and development pass between separate teams.
Complex business experience
Experience across energy, industry, laboratory, compliance and enterprise management systems.
Requirements and engineering as one
Business analysis, architecture design and core development run through a single delivery system.
Respect for existing systems
We choose integration, extension, progressive refactoring or replacement by risk and value, never forcing a single rebuild.
Operations considered early
Deployment, monitoring, maintenance, documentation and release iteration are planned during the build.
Project consultation
Clarify the business problem first,
then decide how the system should be built.
Tell us the business problem to solve, your existing systems and the outcome you expect — we usually reply within 1 business day.