SharePoint gives you three ways to hold knowledge base content, and the wrong choice quietly costs you for years. Here is what wikis, site pages, and document libraries are each good and bad at, and how to choose.
When you build a knowledge base in SharePoint, one early decision shapes everything that follows: what do your articles actually live in? SharePoint gives you three plausible homes, the classic wiki, modern site pages, and the document library, and they look interchangeable until you have a few hundred articles and discover they are not. This guide explains what each is genuinely good and bad at, and how to choose without regretting it in two years.
The three options, honestly
The classic wiki
SharePoint's wiki library is the closest thing to a traditional, link-as-you-type article model, and for fast internal linking between short articles it has a certain charm. The honest problem is that it is legacy. Microsoft has been steering people towards modern pages for years, the editing experience is dated, and building a long-term knowledge base on a de-emphasised feature is a risk you will pay for later. It is fine for a small, informal team wiki and a poor bet for anything you need to last.
Modern site pages
Site pages are the current, well-supported way to publish content in SharePoint, and they look great. They are page-builders, though, which is both the strength and the catch. For a polished landing page or a featured guide they are excellent. For the hundredth how-to article they are heavy: every article is a page you assemble from web parts rather than an entry you simply write, deep-linking to a specific section is awkward, and there is no real catalogue view of your articles as articles. Site pages shine for a handful of important pages and strain as a high-volume article system.
The document library
The document library is where most knowledge ends up by default, because it is where files already live. It is unbeatable for actual documents: versioned, permissioned, searchable files. As a knowledge base it has a quiet weakness, which is that a knowledge base is not really a pile of documents. Forcing articles into Word files buried in folders means people download to read, deep-linking is impossible, and the experience is closer to a filing cabinet than an answer engine. Great for source documents, weak as the reading experience.
How to choose
The decision gets easier when you match the tool to the content rather than picking one for everything.
Use the document library for genuine documents: the source policy, the signed contract, the spreadsheet, anything whose canonical form is a file. Use modern site pages for a small number of high-value, designed pages: the knowledge base landing page, a flagship guide, a curated index. Avoid building your bulk article catalogue on the legacy wiki, because you will be migrating off it within a few years.
The honest gap is the most important case: the large volume of everyday how-to and reference articles. None of the three is purpose-built for that. The wiki is legacy, site pages are too heavy per article, and the library turns articles into downloads. This is the structural gap at the heart of using SharePoint as a knowledge base, and it is worth naming plainly rather than pretending one of the three quietly solves it.
What actually fits the article case
For the bulk article catalogue, what you really want is a self-provisioning article system: write a structured rich-text article, have it instantly searchable and deep-linkable, attach files where needed, and browse everything as a real catalogue, without assembling a page or burying a document. That is exactly the layer SharePoint does not ship, and exactly what Athena's Knowledge Base webpart adds inside your existing SharePoint. You still use libraries for documents and site pages for your showcase pages; the webpart handles the high-volume articles the native three options handle badly. The point is not the product, it is the principle: match each kind of content to a home that suits it, and stop forcing articles into tools built for files or pages.
A simple rule to remember
Documents go in libraries. Showcase pages go in site pages. Everyday articles want a real article system, not a wiki and not a pile of files. Get that split right at the start and your knowledge base stays usable as it grows, instead of becoming the thing nobody trusts.
Where to go next
Structure is the decision that quietly decides whether a knowledge base survives. Once it is right, see how to build the knowledge base natively, read SharePoint as a knowledge base: what works and what breaks, and explore the wider SharePoint knowledge base approach. When you want to see the article catalogue in action on your own tenant, you can try it free for 21 days.
Athena adds policy management, a knowledge base, org chart, noticeboard and more to the SharePoint your team already uses. Per-tenant pricing, no separate SaaS.