Build Resilient Systems
Building resilient systems for organisations delivering critical services.

What this service is
Build is where most of our work lives:
- Public-facing platforms serving millions of users
- Case management systems at the heart of regulatory operations
- Cloud migrations that can't afford downtime
- AI applications that work in production
The clients who come to us for build work are carrying real pressure. Their services are used by millions of people, scrutinised by regulators and ministers, and depended upon by the public and professionals who have no alternative. We build to a standard that holds up when it matters, not just when it's being demonstrated.
Our services
Four services sit under Build.
Digital Platform and Product Delivery
CMS-led platforms and modern full-stack applications at national scale. Built to perform under high traffic, sustained attack, and years of continuous use.
Process Automation and Case Management
Reliable, auditable digital workflows replacing manual and fragile processes. Depth on Appian at national, regulated scale.
Applied AI
Practical AI capability built and deployed - not workshopped. Working AI applications on the Cloudflare Developer Platform and cloud equivalents.
Cloud Modernisation
Critical systems running well on modern cloud platforms. High-stakes migrations where downtime isn't an option.
Why build with CDS?
01
We build for the real thing
The evidence base across our clients is national scale: 10 million daily users, 99.99% availability through 227 million peak requests, 100% uptime over multiple years, migrations completed in weeks without downtime.
02
We're full lifecycle, not just delivery
We build it, secure it, and run it. Clients get one accountable team from start to finish - not a delivery partner who hands over and walks away.
03
We start from the problem
Every engagement begins with a clear understanding of what the service needs to do and who it needs to serve. Technology follows that understanding, not the other way around.
04
AI is already part of how we deliver
We use AI-assisted development tools across our engineering teams. It makes our delivery faster, our code more consistent, and our teams more effective. We also build AI capability into the services we deliver: applied AI features, AI-enabled workflows, AI on the Cloudflare Developer Platform.
See our proof
We work with clients across central government, emergency services, health, financial services and national-scale consumer digital. The common thread is that the services they run can't afford to fail.

The central government property register - delivered in five months
Failing government digital services rescued. All audited against the 14 points of the Government Service Standard, given a structured recovery plan, and returned to successful delivery.

Single Online Home
Optimizely platform serving 43 police forces. 100% uptime since 2022. £200 annual saving from centralised hosting.
Replatforming the National Rail Enquiries Journey Planner to handle high demand
Umbraco CMS on AWS. 10 million daily users, 99.99% availability. 227 million requests handled during the 2022 rail strikes without degradation.
A digital platform for Social Work England using Appian low-code and Umbraco CMS
Appian case management for 96,000 social workers. Applications developed 20x faster. Hundreds of thousands of wasted hours saved annually.
Speak to our experts
Get in touch with our team today to see how we can help your organisation.
