Rescue or take over
Legacy system support and re-platforming
Keep critical systems alive, then move them somewhere better
Stabilise now, modernise when ready
Keep critical systems alive, then move them somewhere better.
The system that runs your business doesn't have to be the newest to be the most important. We keep legacy applications healthy, secure and supported, then move them onto modern foundations without disrupting operations.
Book a discovery call →
What we do
Maintenance, modernisation and re-platforming for the ageing systems your business still depends on, without a risky big-bang rewrite.
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Support & maintenance
Ongoing care for systems the original team no longer touches, kept healthy, secure and running.
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Security & updates
Dependency and security updates that close the risks which quietly build up over time.
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Incremental re-platforming
Modernise piece by piece onto modern foundations, not all at once, never a risky big-bang cutover.
When to call Putti
We listen first, then get to work. Get in touch when:
- A critical system is ageing and no longer well supported.
- Security and dependency risks are piling up.
- The system is understood by no one and feared by everyone.
- You want to modernise without betting the business on one cutover.
Why Putti
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Experienced
16+ years keeping business-critical systems alive since 2010.
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Low-risk
Incremental migration over big-bang rewrites: continuous value, nothing bet on one cutover.
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Committed
We document and capture knowledge, so the system is understood, not feared.
A safer path forward
The benefits of modern tech without betting the business on a single cutover, delivered continuously, with your team running throughout.
Book a free discovery call →- 16+
- years supporting critical systems
- Zero
- big-bang rewrites required
More rescue services: Project Rescue Vibe-coded Handover SaaS Replacement
Frequently asked questions
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How can I modernise old systems without replacing everything?
Stabilise first, then replace the old system piece by piece behind a new interface, an approach engineers call the strangler pattern. Invoicing might move first, then the customer portal, while everything else keeps running on the old platform. A big-bang rewrite is where most modernisation budgets die, because nothing works until everything works. The integration work underneath.
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How is legacy system support priced?
It depends on the size and condition of the system, and on how much has been left unpatched. Once a review shows what needs attention, maintenance runs as a long-term support arrangement sized to that work, so spending is planned rather than arriving after an outage. Any re-platforming is scoped and priced separately, one stage at a time. What custom software costs.
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When is it time to replace a legacy system instead of maintaining it?
When keeping it alive costs more than moving it, or when it blocks something the business needs. The usual triggers are a framework or database that no longer gets security patches, a system only one person understands, and integrations the old platform can't support. Until one of those shows up, maintaining it well is normally the cheaper and safer choice. Fix or rebuild, compared.
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Will you support a codebase you didn't write?
Yes. Taking care of codebases we didn't originally build is a normal part of our support work. We start with an independent code review that ranks the risks, from unpatched dependencies to modules nobody can explain, then take over maintenance in that order, so the riskiest problems get fixed first.
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What if the original vendor is gone?
Usually it's recoverable. We start from whatever you can still reach: code repositories, the servers the system runs on, hosting and domain accounts, even old handover emails. From there we document how the system actually works and rebuild the knowledge that left with the vendor, so it stops depending on one company's memory.
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How long does it take to re-platform a legacy system?
Re-platforming a business-critical system commonly takes several months to a year, but it isn't one long wait. Putti moves it in stages, one capability at a time, such as reporting or customer accounts, while the old system keeps running. You see each stage go live along the way, and the old platform is switched off only once nothing depends on it.