Wiki versus docs-as-code
A category-defining comparison. Wikis and docs-as-code make different trade-offs about storage, review, and authority. Neither is wrong. This page explains when each approach makes sense, and where architecture documentation fits in the space between.
Wiki and docs-as-code are usually discussed as two tools, but they are better understood as two philosophical positions about what documentation is. A wiki treats documentation as a shared workspace. A docs-as-code approach treats documentation as code. The choice between them is not really about features. It is about where documentation sits in the change process, and about the kind of editing the content is meant to encourage.
Both positions are coherent. Both have real strengths. The trade-offs are symmetric, which is why the argument keeps going, and why it is worth treating as a design question rather than a product comparison.
Two positions, stated plainly
A wiki makes editing easy and review optional. A docs-as-code approach makes review mandatory and editing a change that has to be justified. The difference is not cosmetic. It shapes who contributes, what the contributions look like, and how quickly the content can change.
| Dimension | Wiki | Docs-as-code |
|---|---|---|
| Storage | A hosted store, usually behind a login, with pages as the primary object. | Files in a repository, versioned alongside code, with commits as the primary unit of change. |
| Review process | Optional. Editing is usually direct, with review happening out of band or through workflow add-ons. | Mandatory. Every change is a pull request with a reviewer and an approval step. |
| Authority | The latest edit is the authority. Earlier versions are recoverable but not usually consulted. | The merged commit on the main branch is the authority. History is first-class and routinely consulted. |
| Edit friction | Low. Writing a page is closer to writing an email than to submitting a change. | Higher. Writing a change is closer to submitting code than to writing an email. |
| Audit trail | Page history at the level of who edited and when. | Full commit history with diffs, authors, messages and review comments. |
| Discoverability | Strong in-product search, friendly to non-technical readers who browse by title. | Depends on the publishing pipeline. Raw files are harder to browse, but published output can be shaped for any audience. |
| Suitability for architecture | Good for narrative and discussion about architecture. Weaker at holding architectural structure together across changes. | Good for artefacts that must stay in step with the code. Weaker at open-ended prose that benefits from low edit friction. |
Where structured docs-as-code comes in
Classic docs-as-code stores Markdown in a repository. The review process is the value. The content is still free text, which means a reviewer is reading prose and asking whether it still matches the system. That works, but it puts a human in the loop on every structural check.
Structured docs-as-code stores the architecture as typed data rather than prose. The same repository model applies, but the review is reviewing structure, not paragraphs. Whether a property still exists, whether an endpoint still serialises it, whether an integration still depends on it, are all questions a tool can answer. The reviewer spends attention on the things that actually need human judgement.
Where to look next
For a broader view of how NeoArc compares to the categories of tool most teams are already using, see how NeoArc compares. For a plain description of the product, see the product overview.
NeoArc sits in a category of its own. It is not a wiki, not a diagramming tool, not a specialised modelling tool. It is an architecture workbench built around a single model. This page explains where it fits, and where it does not.
NeoArc Studio is an architecture workbench built around a single model. Define your domain once and every view, schema, diagram and published document derives from it automatically.