Companies replacing legacy systems
You're stuck on Excel, Access, an aging custom app, or a vendor-built tool that nobody supports anymore. We help you replace it — without losing data, breaking workflows, or pausing operations.
The problem
The legacy system still works just well enough that no one wants to touch it — but every year it's harder to maintain, harder to hire for, and the workarounds pile up. You know it has to be replaced; the risk is doing it safely.
The approach
We run a risk-managed legacy replacement: discovery, data migration with full audit trail, parallel-running the new and old systems, and a phased cutover so operations never pauses.
What we deliver
Who this is for
- Operations leaders responsible for an aging business-critical system
- Companies running on Microsoft Access, FoxPro, or legacy ERPs
- Teams whose vendor stopped supporting the original software
- Businesses where 'the spreadsheet that runs the company' has become a risk
Example engagements
- Replacing a 15-year-old Access database with a modern web app
- Migrating from a discontinued vertical-SaaS tool to a custom platform
- Retiring a spreadsheet-driven operations process
- Modernising a legacy on-prem ERP into a hosted system
How we run a legacy replacement engagement
Risk-managed approach to retiring legacy software with no operational downtime.
Discovery & risk assessment
Inventory current capabilities, data, integrations, and risks.
2 weeksArchitecture & migration plan
Design the replacement, map data migration, define rollout phases.
2 weeksBuild & migrate
Implement, migrate data, validate workflows with real users.
10 weeksCutover & sunset
Parallel run, cutover, archive the old system, train the team.
2 weeksTimeline & budget
Typical timeline
Most replacements run 12–20 weeks. Phased rollouts can extend the calendar timeline while reducing risk.
Typical budget
Typical replacement engagements run $37,500 to $200,000+. Larger systems with extensive data migration land at the higher end.
Frequently asked questions
How do you avoid disrupting operations?
We run the old and new systems in parallel, validate with real users, and only cut over once the new system is proven stable on production data.
What happens to historical data?
We extract, clean, and migrate it with a full audit trail. Historical records remain accessible from day one — sometimes in the new system, sometimes via archival access to the old one.
What if we still need parts of the old system?
We integrate with or migrate functionality in stages. Some clients keep the old system online for read-only archival access while operations move to the new platform.
How is this different from a SaaS migration?
Off-the-shelf SaaS forces you to adapt to vendor workflows. Custom replacement preserves what works about your current process and fixes what doesn't.
Ready to start a project?
Tell us what you're trying to build and the outcome you need. We'll suggest a scope, timeline, and milestone-priced plan.
- Call971.255.2633
- Email[email protected]
We will respond within 1 business day.