Services
Legacy system modernization
Modernizing the systems your business already runs on. .NET Core services carved out of aging monoliths, big data pipelines that keep up, and microservices only where they actually pay.
- Free 30-minute scope call
- Quote within 48 hours
- Typical build 6–12 weeks
What we take on
- .NET modernization
- Framework-era codebases moved to modern .NET: current runtimes, sane dependency graphs, and tests where there were none. Legacy .NET is home turf.
- Monolith carve-outs
- Services extracted from aging monoliths one seam at a time, with the old system running until the new one has earned trust.
- Big data pipelines
- Event-driven backbones that process millions of messages a day: idempotent consumers, exactly-once effects where it matters, and failure drills rehearsed in advance.
- Database untangling
- Shared databases split along ownership lines, migrations that run without downtime windows, and reporting that stops fighting production.
- Microservices, where they pay
- Distribution only where the team and the domain justify it. We have merged services back together as often as we have split them apart.
- Audits & roadmaps
- A short paid audit that maps the real state of the system and sequences the modernization so each step ships value on its own.
How we modernize without stopping the business
The cardinal rule of legacy modernization is that the business keeps running while it happens. Nobody gets to freeze finance, inventory, or HR for a rewrite, and big-bang rewrites fail often enough that we simply do not sell them.
Instead we work seam by seam. A short paid audit maps the system as it actually is, not as the documentation remembers it. Then services are carved out in slices that each ship value on their own, with the legacy system running alongside until the replacement has earned trust in production. Weekly demos show real traffic moving, not architecture diagrams.
Our modernization work is mostly .NET and the data systems around it: C# services on modern .NET, Kafka where event volume demands it, and clouds your ops team already knows. The fixed price and the exit-any-week terms apply here like everywhere else, which matters most on exactly the projects that historically overrun.
Fair questions
Anything not covered here is a quick note to hello@insetix.com.
Can you modernize our system without downtime?
That is the default assumption, not a premium option. The old system keeps running while services are carved out one seam at a time, and cutovers happen only after the new path has proven itself alongside the old one.
Our .NET Framework app has no tests. Is that a problem?
It is normal. Most systems that reach us have little or no test coverage. Characterization tests get written around each seam before it moves, so behavior is pinned down before it changes.
Do we need microservices?
Probably fewer than you have been told. Distribution has real costs, and we recommend it only where team structure or scale genuinely pays for it. Sometimes the honest answer is a well-organized monolith on modern .NET.
How do you price modernization work?
It starts with a short paid audit, so the quote reflects reality rather than optimism. After that, the same terms as every Insetix project: fixed price in writing, weekly demos, and the option to stop at any week paying only for what shipped.
Tell us what you're building.
Three sentences is plenty. Scope call within days, a written fixed-price quote 48 hours after it.