Some clients want a development team. Others want to hand over the whole lifecycle and hold one party accountable for the result. This is the second one.
We take responsibility for all six stages, which means there is no seam between the people who specified the system and the people who have to run it at three in the morning.
The six stages
Planning. Scope, constraints, budget envelope and success criteria. We push hard on what happens if the project is late, because that determines how much sequencing risk is acceptable.
Analysis. Business process mapping, data modelling, integration inventory, and the non-functional requirements that usually surface too late: throughput, retention, regulatory reporting, audit trails.
Design. System architecture, data flows, interface design, and the deployment topology. Decisions get written down with their reasoning, so the team inheriting them knows why.
Implementation. Sprint-based delivery against the agreed increments, with code review and continuous integration throughout.
Testing and deployment. Automated test coverage where it earns its keep, manual QA where it does not, load testing against realistic volumes, and a deployment process that is boring by design.
Maintenance. Monitoring, incident response, dependency and security updates, and the steady stream of small changes every production system needs.
Why the seams matter
The expensive failures happen at handovers, between analysis and build, and between build and operations. Owning the full cycle removes those handovers. It also means we live with our own architectural decisions, which is a strong incentive to make good ones.