Legacy systems often carry real business value, but their frameworks, dependencies, deployment patterns, and frontend stacks eventually become a drag on security, hiring, performance, and delivery speed. We help teams move from .NET Framework or older .NET Core versions to current .NET, and from AngularJS to modern Angular, using staged migration plans that keep the business operating.
Best fit
- Businesses running important ASP.NET Framework, older .NET Core, or unsupported .NET applications.
- Teams with AngularJS frontends that are becoming difficult to maintain, secure, or extend.
- Companies that need modern deployment, observability, and security without losing current workflows.
- Leaders deciding whether to upgrade, refactor, incrementally replace, or rebuild parts of a platform.
Common signals
- The system still works, but framework versions, packages, or build tooling are out of support.
- AngularJS screens are hard to change and new frontend work keeps taking longer than expected.
- Deployment is fragile, manual, or tied to old server assumptions.
- The business wants modern features, but the current stack makes every change feel risky.
What we build
.NET upgrade paths
Assessment and staged migration from .NET Framework or older .NET Core versions to current .NET, including project structure, package compatibility, hosting, authentication, background jobs, and deployment changes.
AngularJS to Angular migration
Incremental frontend migration plans that replace AngularJS screens with modern Angular while preserving working workflows, routing, API contracts, validation, and user permissions.
Compatibility and integration layers
Temporary adapters, API boundaries, shared authentication, and data contracts that let old and new parts of the system coexist during migration.
Modern deployment foundations
Containerisation, CI/CD, environment configuration, logging, monitoring, and rollback paths that reduce operational risk as the platform changes.
How we approach it
Inventory before changing code
We map framework versions, dependencies, hosting assumptions, build steps, database usage, authentication flows, frontend routes, and the workflows the business cannot interrupt.
Choose the smallest safe migration path
Some systems can move through direct framework upgrades. Others need a boundary-first approach where APIs, screens, or modules are replaced in useful increments.
Keep old and new running together where needed
A staged migration often needs temporary coexistence. We design those boundaries deliberately so the transition does not become a permanent tangle.
Use production evidence to decide the next step
Build checks, smoke tests, logs, performance data, and user feedback guide the sequence so the migration reduces risk instead of just moving code to newer syntax.
Designed around risk
- Upgrade plans based on real dependency and runtime compatibility, not only version targets.
- Regression checks around critical workflows before cutover.
- Staged releases with rollback options for production systems.
- Clear API and authentication boundaries between old and new modules.
- Documentation of migration decisions so the system remains understandable after the upgrade.
Proof points
UME has built, operated, upgraded, and supported production .NET systems over many years, including revenue-critical and security-reviewed platforms.
Modernisation without reckless rewritesOur architecture work focuses on preserving business continuity while reducing the technical debt that slows future delivery.