System diagram
Components, boundaries, and how data moves between interface, services, and storage.
Capability 01
Architecture that decides how the pieces fit.
Agree the users, data, services, and integrations before implementation begins, then own that design through to a system running in production.
What this covers
The expensive decisions are the ones made before any code is written.
Useful when a system serves more than one audience, holds data other processes depend on, or integrates with services nobody controls. You get a design that says where each responsibility sits, so the build has a shape to follow and can be extended later.
Typical problems addressed
- Features are being added faster than anyone can explain how the system fits together.
- Business rules live in several places, so the same question returns different answers.
- An integration, payment provider, or data source needs replacing without a rewrite.
- A working prototype has to become something a team can operate and hand over.
Typical deliverables
A design the build can follow.
Deliverables are scoped to the size of the system and who has to maintain it.
Data model
Entities, relationships, and which record each part of the system treats as authoritative.
API contract
Endpoints, request and response shapes, authentication, and error handling.
Integration plan
Third-party services, what each is trusted for, and the fallback when one fails.
Environment and deployment
How the system is configured, released, and split between development and production.
Decision record
The options, the choice, and the constraint behind it, written down for whoever inherits it.
Workflow
Decide, then build against the decision.
The sequence keeps design ahead of implementation without stalling delivery.
Frame
Establish the users, the decisions the system supports, and the real constraints.
Model
Define the data, the boundaries between services, and the contracts between them.
Prove
Build the riskiest slice first so the design is tested before the rest depends on it.
Hand over
Document the decisions and the operating runbook so the design survives the handover.
Relevant evidence
Where this has been applied.
Claims on this page are grounded in delivered client work and public repositories.
Aristoc Booklex
Collaboration on an e-commerce platform spanning catalogue, accounts, cart, checkout, payment integration, and both delivery and pickup fulfilment.
Visit the platformLogos Cloud Services
Designing pipelines, SQL databases, and reporting workflows that several SME client contexts depend on across fintech, agribusiness, and logistics.
Ngora District Local Government
Documenting standard operating procedures for system-access protocols, and structuring official records so reporting could be trusted.
Not sure how the pieces should fit?
Describe the users, the data involved, and the systems it has to work with.