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<div class="wrap"><header><div class="eyebrow"><span>net-kingdom-architecture</span> <span class="stat">proposed · draft-1</span> <span>net-kingdom</span> <span>reviewed 2026-08-18</span><span>generated from canonical source — do not edit</span></div><h1>NetKingdom architecture</h1><p class="sub">Source: <code>net-kingdom · docs/architecture/net-kingdom_v0.1.md · 0e0962e68b39fdcfb633b5058602174a36416a68</code></p><p class="sub">Review due: 2027-02-18</p></header><div class="layout"><nav class="rail" aria-label="Sections"><ol><li><a href="#about-this-document"><span class="n">·</span>About this document</a></li><li><a href="#s1"><span class="n">1</span>Introduction and Goals</a></li><li><a href="#s2"><span class="n">2</span>Architecture Constraints</a></li><li><a href="#s3"><span class="n">3</span>System Scope and Context</a></li><li><a href="#s4"><span class="n">4</span>Solution Strategy</a></li><li><a href="#s5"><span class="n">5</span>Building Block View</a></li><li><a href="#s6"><span class="n">6</span>Runtime View</a></li><li><a href="#s7"><span class="n">7</span>Deployment View</a></li><li><a href="#s8"><span class="n">8</span>Cross-Cutting Concepts</a></li><li><a href="#s9"><span class="n">9</span>Architecture Decisions</a></li><li><a href="#s10"><span class="n">10</span>Quality Requirements</a></li><li><a href="#s11"><span class="n">11</span>Risks and Technical Debt</a></li><li><a href="#s12"><span class="n">12</span>Glossary</a></li></ol></nav><main><section id="about-this-document"><h2>About this document</h2>
<p>First-wave arc42 for NetKingdom: the estate's identity and tenancy security core. Chapter 9 lists governing ADRs and standards; it does not paste them.</p>
</section>
<section id="s1"><h2><span class="sn">01</span>Introduction and Goals</h2>
<p>NetKingdom is the open security core for DevSecOps on Kubernetes. It owns identity, tenancy posture, and the contracts that flex-auth, key-cape, tenant-engine, and railiance workloads implement.</p>
<h3>1.1 Requirements Overview</h3>
<ul><li>One IAM profile, versioned, owned here.</li><li>Tenancy described as graduated axes, not a single on/off switch.</li><li>Workload packaging and credential vending have explicit boundaries.</li></ul>
<h3>1.2 Quality Goals</h3>
<ol><li>Provider-neutral identity contract.</li><li>Recursive multi-tenant authorization that implementers can declare.</li><li>Honest about what is not there yet (Tenancy Posture).</li></ol>
<h3>1.3 Stakeholders</h3>
<div class="scroll"><table><thead><tr><th>Role</th><th>Concern</th></tr></thead><tbody><tr><td>net-kingdom</td><td>Canon owner for identity and tenancy.</td></tr><tr><td>flex-auth / key-cape / tenant-engine</td><td>Implementers of the contracts.</td></tr><tr><td>railiance-master</td><td>Workload packaging on the rail.</td></tr><tr><td>the-custodian</td><td>Federation; does not redefine these concepts.</td></tr></tbody></table></div>
</section>
<section id="s2"><h2><span class="sn">02</span>Architecture Constraints</h2>
<p>N/A for this stub.</p>
</section>
<section id="s3"><h2><span class="sn">03</span>System Scope and Context</h2>
<p><strong>In:</strong> IAM profile, tenancy posture, tenant/user-engine boundaries, credential management, playbook capability contract, NetKingdom ADRs. <strong>Out:</strong> publication (policy-nexus), rail runtime (railiance), estate work-factory (the-custodian).</p>
<h3>3.1 Business Context</h3>
<p>Security here is dynamic and adversarial. The system exists so implementers share one contract instead of copying a neighbour.</p>
<h3>3.2 Technical Context</h3>
<p>Consumers: flex-auth, key-cape, tenant-engine, audit-core, rApps. Published today: Tenancy Posture <code>/standards/tenancy-posture/v0.1/</code>.</p>
</section>
<section id="s4"><h2><span class="sn">04</span>Solution Strategy</h2>
<p>N/A for this stub — recursive multi-tenant identity (ADR-0006) and the IAM profile ownership rule (ADR-0011) are the spine.</p>
</section>
<section id="s5"><h2><span class="sn">05</span>Building Block View</h2>
<h3>5.1 Level 1 System/Top-Level</h3>
<p>N/A for this stub.</p>
</section>
<section id="s6"><h2><span class="sn">06</span>Runtime View</h2>
<p>N/A for this stub.</p>
</section>
<section id="s7"><h2><span class="sn">07</span>Deployment View</h2>
<p>N/A for this stub.</p>
</section>
<section id="s8"><h2><span class="sn">08</span>Cross-Cutting Concepts</h2>
<p>N/A for this stub.</p>
</section>
<section id="s9"><h2><span class="sn">09</span>Architecture Decisions</h2>
<div class="scroll"><table><thead><tr><th>Source</th><th>Status</th><th>Notes</th></tr></thead><tbody><tr><td><code>canon/standards/tenancy-posture_v0.1.md</code></td><td>proposed</td><td>Published. First publication of this site.</td></tr><tr><td><code>canon/standards/iam-profile_v0.3.md</code></td><td>accepted</td><td>Current profile. Needs a unique publication id (v0.2 still shares <code>netkingdom-iam-profile</code>).</td></tr><tr><td><code>canon/standards/iam-profile_v0.2.md</code></td><td>should be superseded</td><td>v0.3 supersedes it; front-matter still <code>accepted</code>.</td></tr><tr><td><code>docs/adr/ADR-0006</code><code>ADR-0015</code></td><td>see files</td><td>Identity, orchestration, IAM ownership, tenant roles, packaging. Publish after <code>NK-ADR-*</code> prefix and review metadata.</td></tr></tbody></table></div>
<p>Custodian ADR-008 is superseded by Tenancy Posture and is not current.</p>
</section>
<section id="s10"><h2><span class="sn">10</span>Quality Requirements</h2>
<p>N/A for this stub.</p>
</section>
<section id="s11"><h2><span class="sn">11</span>Risks and Technical Debt</h2>
<p>N/A for this stub. Residual: IAM Profile id collision (WP-0003 packet).</p>
</section>
<section id="s12"><h2><span class="sn">12</span>Glossary</h2>
<div class="scroll"><table><thead><tr><th>Term</th><th>Meaning</th></tr></thead><tbody><tr><td>IAM Profile</td><td>Provider-neutral OIDC contract owned here.</td></tr><tr><td>Tenancy Posture</td><td>Graduated axes for describing multi-tenancy.</td></tr><tr><td>Tenant-engine</td><td>Lifecycle and capability roles for tenants.</td></tr></tbody></table></div>
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