Digital modernization & architecture
Modernize a legacy .NET application without an unnecessary full rewrite
MARKNA helps teams assess business-critical .NET systems, reduce modernization risk, and move forward in practical phases while protecting the behavior the business still depends on.
A modernization path built around the system you already have
Legacy .NET applications often contain years of business rules, integrations, data dependencies, and operational knowledge. Replacing everything at once can create avoidable delivery and continuity risk.
MARKNA starts by understanding the application, its dependencies, and the business constraints. The result is a technical roadmap that distinguishes what can be upgraded, what should be refactored, what can be isolated behind APIs, and what may eventually need replacement.
How an incremental modernization engagement works
The exact route depends on the codebase and operating constraints. MARKNA uses assessment and staged delivery to avoid choosing a migration pattern before the evidence is clear.
- Step 1
Assess the current system
Review architecture, runtime and framework versions, dependencies, integrations, data flows, deployment, security concerns, and operational constraints.
- Step 2
Protect critical behavior
Identify high-risk business rules and add practical characterization, integration, or regression tests where they provide the most protection.
- Step 3
Choose the smallest useful modernization boundary
Compare upgrade, refactor, replatform, API extraction, module replacement, and coexistence options instead of defaulting to a full rewrite.
- Step 4
Deliver in controlled phases
Modernize modules or platform layers in a sequence that keeps the existing system available and makes rollback and validation explicit.
- Step 5
Improve operability and ownership
Document architecture, deployment, dependencies, decisions, and the next modernization priorities so the client team can maintain the result.
Possible deliverables
- Architecture, code, dependency, and data-flow assessment
- Modernization options with risks and trade-offs
- Prioritized phased roadmap and target architecture
- Runtime/framework upgrade or focused refactoring
- API and integration boundaries around legacy functionality
- SQL Server and data-layer modernization plan
- Testing, deployment, and technical documentation improvements
What we do not assume
- A microservices architecture is not automatically the right target.
- Azure migration is recommended only when it fits the workload and business case.
- No zero-downtime, cost-saving, or delivery-time result is promised before assessment.
- Modernization recommendations are based on the actual system, not a one-size-fits-all rewrite template.
Related MARKNA capabilities
Start with a modernization assessment
Tell us what the application runs on, what cannot be disrupted, and where change is currently blocked. We will give you an honest view of the first useful assessment step.