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How should teams manage identity and access documentation when they need to modernise an older open source platform without breaking compatibility?

Teams should treat documentation migration as a controlled governance exercise, not a simple file conversion. Preserve technical accuracy, remove outdated branding where required, and map the current code base before publishing updates. The safest approach is to separate legacy reference material from new guidance, then review each chapter for correctness, usability, and community contribution before wider rollout.

How to modernise documentation without breaking the old platform contract

Compatibility problems usually come from changing the meaning of the documentation before the code has actually been mapped. Treat the old docs as a reference contract for existing users, then document the modernised platform as a separate, current layer. That lets you remove stale branding, correct technical drift, and preserve the behaviours people already depend on.

For identity and access material, that means being precise about what still exists, what has been renamed, and what has been deprecated. A migration that rewrites terminology without preserving legacy references can confuse operators, break onboarding, and create false assumptions about roles, permissions, or account behaviour.

When the platform has a long compatibility tail, keep a clear boundary between historical guidance and active guidance. Ultimate Guide to NHIs is useful here because it reinforces the wider governance pattern teams need when identity material, lifecycle rules, and access expectations must stay accurate across transitions.

What a safe documentation migration process looks like

Start by mapping the current code base and the current operational paths, not just the page structure. If the documentation names an endpoint, account type, permission model, or admin workflow, confirm that the modern platform still supports it, has changed it, or has replaced it with something else. Then migrate in layers, so legacy readers can still find the old reference while new readers land on the updated guidance.

The practical rule is to keep the documentation architecture aligned to the product architecture. That usually means versioned pages, explicit deprecation notes, and a clear decision on whether old content remains frozen, is redirected, or is rewritten. It also means reviewing every chapter for technical correctness and community usefulness before you widen publication.

  • Preserve any compatibility-sensitive terminology until the replacement path is documented.
  • Separate reference material from how-to guidance when the platform has changed significantly.
  • Validate identity-related details such as account types, auth flows, and role names against the code base.
  • Use review checkpoints to catch accidental changes in meaning, not just copy-editing issues.

For teams handling identity and access changes, the most useful internal reference is the NHI Lifecycle Management Guide, because migration problems often show up as lifecycle mistakes: stale references, missed revocation paths, or outdated ownership assumptions. The related Top 10 NHI Issues also helps teams spot where documentation drift turns into access or governance drift.

Standards & Framework Alignment

This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.

OWASP Non-Human Identity Top 10 address the attack and risk surface, while CIS Controls v8 and NIST CSF 2.0 set the governance and control requirements practitioners need to meet.

Framework Control / Reference Relevance
CIS Controls v8 6 — Access Control Management Docs must preserve accurate access and role semantics during migration.
Recommendation — Review and update access definitions so legacy and current permission guidance stays aligned.
NIST CSF 2.0 GV.RM-01 — Risk Management Strategy Documentation migration is a governance change that can introduce compatibility risk.
PR.AC-4 — Access Permissions Management Identity and access docs must reflect real roles, permissions, and account behaviour.
Recommendation — Treat documentation updates as a governed change with explicit review and approval. Validate that documented access paths still match the platform’s enforced permissions.
OWASP Non-Human Identity Top 10 NHI-01 — Secrets and Credential Management Identity docs often describe secret handling, lifecycle, and rotation expectations.
NHI-08 — Lifecycle and Offboarding Migration often exposes stale ownership, deprecation, and revocation guidance.
Recommendation — Keep secret-handling instructions accurate across legacy and modernised documentation. Preserve lifecycle and revocation instructions until the replacement path is verified.

Practitioner Guidance

What to verify: Verify that every identity and access term in the migrated docs still maps to a real platform object, permission, or workflow. If a legacy term no longer exists in code, mark it as historical rather than silently modernising it into something different.

Implementation sequence: Freeze the legacy reference set first, then publish the updated guidance, then add redirects or cross-links. That sequence reduces support friction because readers can still resolve old instructions while the new model becomes the default.

Common mistake: The easiest way to break compatibility is to optimise for consistency in wording instead of consistency in behaviour. A clean rewrite can be less safe than a visibly transitional document set if users rely on the old mental model to operate the platform correctly.

Practitioner takeaway: The goal is not to make the documentation look new everywhere at once, but to make the migration legible enough that old users are not misled and new users are not forced to infer hidden compatibility rules.