Replace the spreadsheet
with software that answers.

Digital Signet is an AI-native software studio: a team of AI agents directed by twenty years of delivery experience. We build the software that replaces the IT budget spreadsheet: cross-source cost dashboards, SaaS spend visibility, forecasting, integrations into your finance systems. Fixed quote in two working days. Builds ship in weeks, not months.


An AI-native studio, directed by twenty years of delivery.

Digital Signet is not a traditional agency. A directed team of AI agents does the volume of the build work. A senior engineer with twenty years of shipped software directs it, reviews everything, and takes responsibility for what goes out. That is the whole model, and it is why the economics look wrong next to an agency quote: senior-grade software in weeks, at a fixed price, without a bench of juniors on the invoice.

The output is deliberately boring. Versioned code in your repository, tests, CI/CD, documentation your engineers can pick up without us in the room. The method is new. The engineering standards are not.

The model is not a theory either. It runs daily on enterprise client work, including AI-anchored Azure platforms for a UK data transformation consultancy, with the CI/CD and review discipline that enterprise clients audit.


What replacing the IT cost spreadsheet actually looks like.

Every IT leader has the same spreadsheet. One tab per source system, formulas that break every quarter, a manual reconciliation before every board pack. Cloud spend comes from a billing export. SaaS licence spend comes from an admin console screenshot. Contractor spend comes from accounts payable. Hardware refresh comes from a separate list. Someone spends two working days a month keeping it upright.

Custom software replaces it. Concrete shapes of recent work:

The clarifying test: if a spreadsheet on your machine is called something like "IT budget 2026 v14 FINAL FINAL", or someone in IT dreads the day the CFO asks a question that requires refreshing it, that is the work we do.

What we do not do.

Straight list:


Builds with a cost story attached.

Case studies are anonymised. The technical detail is the point. Three where the build paid for itself in visible cost terms: a licence line removed from the tooling budget, honest numbers used to negotiate with vendors, and a modernisation that avoided an expensive rebuild.

Licence cost removed, production through an acquisition

Tablet survey at scale: AutoCAD-grade drawings without AutoCAD on every tablet

Browser-rendered CAD replaced a full AutoCAD licence on every surveyor's device, removing the per-seat line from the field-engineering tooling budget. Running daily across a national survey fleet, and it kept running through a corporate acquisition of the business unit.

Numbers you can negotiate with

Architecture and prototyping for a satellite communications platform

Honest team-scale and time estimates on a strategic programme, with no vendor-favourable padding. The client used those numbers to negotiate the implementation phase with two of the largest enterprise vendors in the world.

Modernise in place, skip the rebuild

Legacy modernisation for an industrial manufacturer

A classic-ASP project management system lifted to a modern stack in place, preserving the business logic the team relied on. The cheaper answer defended over the expensive rebuild, which is our default position when clients ask.

We also build and run independent buyer-research tools in this space, including itbudgetcalculator.com. If you arrived here from it, you have already used our work.

All case studies


How a build happens.

Every engagement runs the same shape.

  1. 30-minute scoping call. You describe the spreadsheet. We ask what source systems exist, who reads the current view, and what a good outcome looks like.
  2. Written fixed quote within 48 hours. Scope, price, timeline, what is in, what is not. If we do not think we are the right build partner we tell you.
  3. Build in weekly cycles. A directed team of AI agents does the volume of the software work. Twenty years of software delivery experience directs the build and stands behind what ships.
  4. You own the code and the data. Delivered to your infrastructure, documented for your team. No lock-in.
  5. Optional retainer. Once shipped, an ongoing engineering retainer keeps the software adapted as your source systems and cost model change.

Questions IT and finance-adjacent buyers ask first.

What does "IT cost visibility" actually mean in a build?

Custom software that pulls spend data from the places it actually sits (cloud billing, SaaS admin consoles, accounts payable, licence registers, HRIS for headcount-tied spend), tags it against the categories your business cares about, and shows the numbers where the decision-maker actually reads them. Replaces the spreadsheet that finance and IT jointly own and neither wants to.

How is this different from a FinOps platform like Apptio or Vantage?

Off-the-shelf FinOps platforms are strongest on cloud spend and weaker on the mid-tail of SaaS licences, contractor spend, hardware refresh cycles and everything else that ends up in the IT budget. If you already run one and it does not cover the questions your CFO is asking, the answer is often a bespoke layer that fills the gap. We build against your existing platform, not instead of it.

Which systems do you integrate against?

Cloud billing (AWS, Azure, GCP). SaaS admin APIs (Google Workspace, Microsoft 365, Salesforce, HubSpot, Slack, and any SaaS with an admin API). Accounts payable and ERP (Xero, QuickBooks, NetSuite, Sage). Ticketing (Jira, ServiceNow) for cost-per-ticket work. HRIS for headcount-tied spend. Anything with an API is a candidate.

What does an IT cost tooling build cost and how long does it take?

Focused single-view builds (one dashboard against one or two sources) run £4,000 to £12,000 fixed quote, delivered in three to five weeks. Multi-source spend platforms (cloud plus SaaS plus AP, forecasting, drill-downs, monthly board pack) run £15,000 to £45,000, delivered in six to twelve weeks. Ongoing engineering retainers start at £1,500 per month.

Who owns the data and where does it live?

You own it and it lives in your infrastructure. We build against your cloud account, your data warehouse if you have one, your BI tool if you already run one. Read-only credentials to source systems where possible. NDA and DPA before scoping. Independent UK consultancy, no offshore team.

Who actually writes the code?

A directed team of AI agents produces the volume of the code. A senior engineer with twenty years of delivery experience directs the work, reviews everything, and takes responsibility for what ships. The review, testing and CI/CD discipline is what you would expect from a senior team. What changes is the economics and the speed. The same model runs daily on enterprise client work, not just internal projects.

Written by Oliver Wakefield-Smith, founder of Digital Signet. Twenty years of building and shipping software across broadcast media, satellite communications, sports media, water utilities, retail, finance, manufacturing and the public sector. More about Oliver.

Related: Security stack engineering · DevOps platform tooling · Tech partnership


Tell us the shape.

Two paragraphs is enough. The source systems, the questions you cannot answer without the spreadsheet, and what "good" looks like. Written back within two working days with a shape, a price and a timeline.

Or book a 30-minute call.