System Overview
The Platform is a shared engineering foundation that enables multiple applications and products to operate on top of a single, coherent system.
Its purpose is not to centralize applications, but to centralize knowledge, infrastructure, and decision-making so that products can remain thin, focused, and independently deployable.
This document presents the Platform at its highest level before introducing individual domains, packages, and workflows.
Architectural Layers
At a system level, the Platform is organized into four layers:
Applications
Platform Packages
Platform Domains
CI/CD Workflows
Each layer has a clearly defined responsibility and interacts with the others through explicit contracts.
System Diagram
Layer Responsibilities
Applications
Applications are responsible for:
product-specific business logic
UI composition and routing
framework-specific concerns
consuming platform capabilities
Applications do not own infrastructure concerns such as API clients, authentication logic, testing frameworks, or CI/CD pipelines. These concerns are delegated to the Platform.
Platform Domains
Domains define behavioral knowledge once.
They are:
framework-agnostic
fully typed
independent of UI and runtime concerns
Domains capture rules such as API communication patterns, authentication behavior, retry logic, validation, and error handling. They do not reference applications or frameworks.
Platform Packages
Packages adapt domain behavior to specific runtimes:
React
Vue
Node services
They translate domain logic into hooks, composables, services, and utilities that applications can consume directly. This adapter layer allows multiple frameworks to share the same core behavior without duplication or drift.
CI/CD Workflows
CI/CD is treated as a platform concern.
Reusable workflows:
own build, test, and release logic
are versioned and opt-in
enforce consistency across applications
use GitHub Context to adapt behavior per repository
Applications invoke workflows rather than implementing pipelines themselves.
Why This Structure Exists
This structure allows:
a single developer to operate across many products
consistent behavior across frameworks
safe reuse without tight coupling
predictable releases
scalable evolution over time
Complexity exists once, in one place, and is inherited everywhere else.
What Comes Next
This overview intentionally avoids detail.
The next sections dive deeper into:
Architecture → Domain Model
Architecture → Package Topology
CI/CD → Overview