The math has changed. Permanently.

For twenty years the safe choice was to buy software and bend the business around it. AI-accelerated engineering has flipped the equation: bespoke is now the fast, affordable option, and the advantage goes to whoever acts first.

Before you decide

Do the Living Requirements Document first. Then build or buy.

The usual mistake is to decide build-or-buy first and work out what you need afterwards. Run it the other way round. A remote workshop and a clickable Living Requirements Document, in your users' hands by week three, tells you exactly what the system must do before a single vendor is called or a line of code is written.

If you build, the document is the spec: engineering starts on day one with the screens already agreed. If you buy, it is the scorecard: every vendor is judged against features your users have already validated, not the demo. Either way you are months ahead of the RFP.

Day 0Two ways to start
The traditional path
Write the RFPIssue to vendorsShortlist and demosLegal and contractImplement
A committee forms. Someone opens Word.
Workshop first
Remote workshopLiving Requirements DocumentDecide: build or buyBuild it · or configure the right productLive
An engineer books a working session with your experts.
Week 3
The traditional path
Write the RFPIssue to vendorsShortlist and demosLegal and contractImplement
RFP draft v4. 61 requirements, none of them tested with a user.
Workshop first
Remote workshopLiving Requirements DocumentDecide: build or buyBuild it · or configure the right productLive
Your users have clicked through a prototype of the system. Every requirement in it has been tried.
Week 4 · the Living Requirements Document is your decision toolBuild or buy, you already know what you need
The LRDclickable prototype14 screens · 38 validated requirements · 6 integrations · the 9 things users said they can't live without
If you buildThe LRD is the spec. Screens, rules and data model already agreed with the people who will use it. Engineering starts on day one.
If you buyThe LRD is the scorecard. Every vendor is judged against features your users have already validated, not the demo.
Must-haveVendor AVendor BVendor CVariance vs prior period✓✗✓Late-cedant alerts✓✓✗Reviewer sign-off✗✓✓
Month 3
The traditional path
Write the RFPIssue to vendorsShortlist and demosLegal and contractImplement
Vendor demos booked for next quarter. Nobody has clicked anything.
Workshop first
Remote workshopLiving Requirements DocumentDecide: build or buyBuild it · or configure the right productLive
Built: your system is live. Or bought: the right product, chosen on evidence, already being configured.

The build-vs-buy math has changed. Permanently.

For twenty years, building your own software was the expensive, risky option, so businesses bought off the shelf and bent themselves around it. AI-accelerated engineering has flipped that equation. Bespoke is now the fast, affordable choice, and the advantage goes to whoever acts first.

Buying off the shelf

Your business conforms to the software.

  • Workarounds, spreadsheets and re-keying fill the gaps the vendor never built
  • Your process is now the same as every competitor on the same platform
  • Licence fees climb every year; the roadmap is somebody else's
  • Change requests queue behind a thousand other customers
Building with Treefrog

The software conforms to your business.

  • Every screen, rule and report is shaped around how your people actually work
  • AI-accelerated builds land in weeks, at a fraction of what bespoke used to cost
  • You own it outright: no per-seat fees, no vendor roadmap, no lock-in
  • It becomes a competitive asset nobody else can buy

Weeks,
not years.

What used to be an eighteen-month programme is now a workshop, a proof of concept and a build. The cost of trying has collapsed, so the cost of waiting is what matters now.

Call us before
the RFP.

The best decision a business makes in this cycle is to talk to an engineer early. A few days of forward-deployed work gives you a clickable baseline to judge every vendor against, or to skip the vendor entirely.

Leapfrog,
don't catch up.

Catching up means buying what your competitors already have. Leapfrogging means building the system they will be trying to copy in two years. The window is open now.

Already bought the platform? Good. We'll make it fit.

Build vs buy is rarely all or nothing. The best platforms today run headless: the engine, the data and the analytics are there through an API, and the screens are whatever you want them to be. Your team describes the tool they wish they had; we build that tool on top of the platform you already pay for.

Our own Foundation platform works exactly this way: deal pricing, loss models and portfolio roll-up underneath, your underwriters' own screens on top. Every mode below lands in a fraction of the time a traditional software project takes.

IntegrateWrap AI around what you own

Connect your off-the-shelf system to the rest of the business, automate the gaps it never covered, and put an AI assistant on top of it. The vendor's roadmap stops being your ceiling.

Typically 2–6 weeks
ExtendBuild the pieces that make you different

Keep the commodity core, then build bespoke modules beside it for the workflows that are actually your edge: pricing, triage, reporting, client service.

Typically 4–10 weeks
BuildReplace it with something that fits

When the platform is the problem, build the system your business actually needs. AI-accelerated engineering makes bespoke the fast option, not the slow one.

Typically 8–16 weeks, not 18 months

Questions we get asked

How do I know whether to build or buy?

Do a Living Requirements Document first. Once your users have clicked through a prototype you know exactly what the system must do; build if the workflow is your edge, buy if it is a commodity, integrate if you already own a platform that does the core well.

How long does an AI-accelerated bespoke build take?

Typically eight to sixteen weeks for a production system, after a remote workshop and a clickable prototype in the first three weeks.

We already bought a platform. Is it too late?

No. Most answers are a mix. We integrate AI and bespoke modules around platforms you already own in two to ten weeks, so the vendor's roadmap stops being your ceiling.

Why not just run an RFP?

An RFP asks vendors to score themselves against requirements nobody has tested. A Living Requirements Document tests the requirements with your users first, then becomes the scorecard, so you buy on evidence and months sooner.

Not sure whether to build, buy, or integrate?

Thirty minutes with a senior engineer. You'll leave with a straight read on the right path and a scoped first step, whether or not you hire us.

Book a build call