Secure Delivery Platform

Secure Delivery Platform defines and incrementally implements a trusted software delivery path for containerized workloads on Google Cloud.

The platform is organized around a release candidate whose identity remains traceable from source through runtime. Build success alone does not make an artifact deployable: verification, trust policy, environment policy, and runtime evidence all contribute to release decisions.

Source → Build → Artifact → Verify → Trust → Deploy → Observe → Promote

Architecture

The MVP uses Google Cloud services with deliberately narrow responsibilities:

• Cloud Build builds and verifies release candidates and records release metadata.
• Artifact Registry stores container images identified by immutable digest.
• Binary Authorization represents the deployment admission boundary.
• Cloud Deploy provides explicit progression through target environments.
• GKE runs the workload in separate dev, stage, and prod namespaces.
• Cloud Monitoring and Cloud Logging provide evidence for post-deployment review and promotion decisions.

The Trusted Release Model is documented. The executable foundation and later enforcement, promotion, and operational capabilities are delivered through the roadmap milestones; documentation of a component does not imply that it is already deployed.

See the Architecture Overview and Architecture Diagrams for the complete design.

Trusted release principles

• A release candidate has a canonical identity spanning source, build, artifact, verification, promotion, and runtime.
• The immutable image digest is the artifact identity used by verification and deployment controls.
• Build and deployment authority remain separate trust boundaries.
• Promotion advances the same release candidate; it does not rebuild or replace the artifact.
• Environment policy becomes stricter from dev through stage to prod.
• Runtime evidence informs the explicit release decision for further promotion.

Repository structure

Area	Responsibility
app/	Minimal sample workload used to exercise the delivery path
cloudbuild/	Build and verification configuration
deploy/	Kubernetes manifests and Cloud Deploy assets
docs/	Architecture, policy, operations, diagrams, and the canonical roadmap
monitoring/	Dashboard, log-based metric, and alert policy assets
terraform/	Reproducible Google Cloud and GKE foundation

Documentation

• Architecture Overview
• Trusted Release Model
• Release Identity
• Release Metadata Contract
• Promotion Semantics
• Environment Policies
• MVP Boundaries
• Release Flow
• Architecture Diagrams
• Security Controls
• Cloud Build Verification
• Binary Authorization
• Observability
• Operator Runbook
• Roadmap

Roadmap

The canonical roadmap is maintained in docs/roadmap.md:

1. Trusted Release Model
2. Executable Foundation
3. Trusted Delivery Path
4. Controlled Promotion
5. Operational Visibility
6. Security and Operational Hardening

Implementation builds on the same release identity and trust boundaries, adding executable behavior without redefining the Trusted Release Model.