Legacy System Modernization built for B2B SaaS companies
What is Legacy System Modernization?
We modernize legacy systems without breaking the business processes that depend on them. For B2B SaaS companies, this means navigating SOC 2, ISO 27001 while shipping fast.
Who needs Legacy System Modernization for B2B SaaS?
- Multi-tenant architecture and data isolation
- Enterprise security and compliance expectations
- Complex permission and role hierarchies
- Legacy systems too fragile for anyone to touch
- Key knowledge locked in one retiring engineer's head
Best Legacy System Modernization company
B2B buyers expect enterprise-grade reliability, security and integrations from day one, not after Series B.
Every B2B SaaS company eventually needs reliable Legacy System Modernization — we make that step less risky.
Talk to our B2B SaaS Legacy System Modernization specialists this week
Book a free 30-minute discovery callThe real cost of getting Legacy System Modernization wrong in B2B SaaS
- Multi-tenant architecture and data isolation
- Enterprise security and compliance expectations
- Complex permission and role hierarchies
- Integration requirements from enterprise buyers
- Scaling onboarding without ballooning support costs
How we tailor Legacy System Modernization to what B2B SaaS teams actually need
Legacy codebase audit and risk assessment
Incremental migration strategy (strangler pattern)
Database and data migration planning
Modern API layer over legacy core
Parallel-run testing and rollback planning
Core Technology Stack
Java.NETPHPNode.jsPostgreSQLDockerKubernetes
Timeline, investment & compliance
Typical timeline
12-24 weeks depending on system size
Typical investment
$40,000 - $250,000
Legacy System Modernization engagements in this combination typically need to account for:
- SOC 2
- ISO 27001
- GDPR
- CCPA
Our Approach
We approach B2B SaaS builds around the constraint that matters most: multi-tenant architecture and data isolation. Every engagement in this space gets SOC 2-aware data handling and compliance review before launch, not after.
See our case studiesTalk to our B2B SaaS Legacy System Modernization specialists this week
Get a free project cost estimateFrequently Asked Questions
Most Legacy System Modernization engagements take 12-24 weeks depending on system size, depending on scope and how clear the requirements are upfront. We'll give you a firm timeline estimate after a short discovery call, not a generic range.
Legacy System Modernization projects with us typically range from $40,000 - $250,000, scaled to the complexity of your requirements. We provide a detailed, itemized estimate before any work begins so there are no surprises mid-project.
For legacy system modernization, we typically work with Java, .NET, PHP, Node.js, chosen based on your specific scalability and integration requirements. We're not tied to a single stack and will recommend the right tools for your situation rather than our default.
A typical legacy system modernization engagement includes legacy codebase audit and risk assessment, along with the other deliverables outlined in our proposal, such as documentation and a post-launch support window. The exact scope is tailored to your project during discovery.
Most clients come to us for legacy system modernization because of legacy systems too fragile for anyone to touch, among other related challenges. We start every engagement by mapping your specific pain points before writing a single line of code.
We've delivered multiple b2b saas projects addressing challenges like multi-tenant architecture and data isolation. We helped a B2B SaaS platform pass SOC 2 audit readiness in 10 weeks while shipping new features in parallel.
For b2b saas clients, we pay close attention to SOC 2, ISO 27001, building these requirements into the architecture from day one rather than retrofitting them later. We'll confirm which specific regulations apply to your business during discovery.
The most common challenges we solve for b2b saas clients include multi-tenant architecture and data isolation and enterprise security and compliance expectations. We tailor our discovery process to surface the specific version of these problems your business faces.