How long does a legacy replacement take?

Typical engagements run 12–20 weeks depending on system size, data volume, and how much workflow change is involved. Phased rollouts can extend the calendar timeline while reducing risk.

What does a legacy replacement cost?

Most replacements run $75,000 to $200,000+. Larger systems with extensive data migration and complex workflows land at the higher end.

How do you avoid disrupting operations?

We run old and new systems in parallel during the transition, validate data and workflows with real users, and only cut over once the new system is proven stable.

What happens to our existing data?

We extract, clean, and migrate data with a full audit trail. Historical records are preserved and accessible from day one.

What if we still need parts of the old system?

We can build integrations or migrate functionality in stages. Some clients keep the old system running for archival access while new operations move to the new system.

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.

Legacy System Replacement

The problem

Your business runs on software built 10 or 15 years ago. It works, but barely. The vendor stopped updates. The one person who knew how to customize it left. New hires struggle with the interface.

You know you need to replace it, but the risk feels enormous. Years of data live in that system. Your team has built workarounds that would break if you just switched. A failed migration could halt operations for days.

Who this is for

Companies running critical operations on unsupported software
Businesses with years of data locked in proprietary systems
Teams whose legacy system is blocking growth or hiring
Organizations where the system creator is no longer available
Companies paying high maintenance costs for outdated software

Not a fit

Systems that can be replaced with off-the-shelf SaaS
Legacy software that just needs minor updates

What we build

Modern replacement system matching your workflows

Data migration with validation and cleanup

Parallel running period for comparison

Training materials and documentation

Phased rollout plan to minimize risk

Historical data archive and access

Integration with other current systems

Improved workflows based on current needs

Example workflows

Data migration: Extract from legacy system → transform to new schema → validate against source → import to new system → verify counts and integrity → archive original
Parallel running: Both systems active → staff enters in new system → results compared to legacy → discrepancies investigated → confidence built before cutover
Phased rollout: Department A goes live → issues resolved → Department B follows → iterate until complete → legacy decommissioned
Training transition: Key users trained first → become internal champions → train their teams → support available during adjustment period

Timeline & budget

Typical timeline

12–20 weeks

Including discovery, build, migration, and stabilization

Typical budget

$60k–$150k+

Based on system complexity and data volume

Let's talk

Ready to replace your legacy system?

Tell us about your current workflow and what you need. We'll suggest an approach and a realistic scope.

Call971.255.2633
Email[email protected]

We will respond within 1 business day.