What a wiki is and why you might build one

A wiki is a website where multiple people can create, edit, and organize pages together without needing to know how to code. Think of it as a shared notebook that lives online — anyone with permission can add information, fix mistakes, or reorganize content. The most famous wiki is Wikipedia, but teams use wikis to document how their software works, store company procedures, keep project notes, or build a knowledge base their customers can search.

You might create a wiki if your team keeps losing information in email threads, if you're tired of maintaining a single document that ten people want to edit at once, or if you want a central place where people can find answers without asking you the same question twice. Wikis work well because they're designed for collaboration — the software handles version history, so you can see who changed what and when, and you can undo changes if something goes wrong.

Key Takeaways

  • A wiki is a collaborative website where team members can create and edit pages together, and the most common choice for small teams is MediaWiki (the software behind Wikipedia) or a simpler tool like Notion or Confluence.
  • You can host a wiki yourself on your own server, use a hosted service that handles the technical work for you, or use a free platform like Fandom if you don't need privacy.
  • Starting a wiki means choosing software, setting up permissions so the right people can edit, and creating a few starter pages that show others how to write and organize content.
  • The first pages to create are usually a homepage that explains what the wiki is for, a style guide so pages look consistent, and a table of contents or category system so people can find things.
  • A wiki only works if people actually use it — plan to spend time early on showing your team how to add pages and encouraging them to move their scattered documentation into one place.

Choosing between self-hosted and cloud-based wikis

You have two main paths: run the wiki on your own server, or use a service that hosts it for you. Self-hosted means you control everything and pay only for the server space, but you're responsible for backups, security updates, and keeping the software running. Cloud-based means you pay a monthly fee, but the company handles all the technical maintenance and you can start using it immediately.

For a small team, a cloud service is usually simpler. Confluence (made by Atlassian) is the most common choice for businesses — it costs money but integrates with other work tools and handles permissions easily. Notion works well if you want something lighter and less expensive; it's not a traditional wiki but functions like one. MediaWiki is free and powerful but requires more setup — it's what Wikipedia runs on, so it can handle large wikis, but you'll need to host it yourself or pay someone to do it. For public wikis that don't need privacy, Fandom (formerly Wikia) lets you create a free wiki instantly.

If you're just starting out and your team is under 20 people, begin with Notion or a free tier of Confluence. If you need something that looks and works exactly like Wikipedia, or if you have the technical skill to manage it, self-hosted MediaWiki is powerful and costs nothing beyond hosting.

Setting up your wiki and configuring permissions

Once you've chosen your platform, the setup process depends on which one you picked. If you're using Confluence or Notion, you create an account, name your wiki, and invite team members by email. If you're self-hosting MediaWiki, you'll download the software, install it on a server (or ask your hosting provider to do it), and then log in to configure it.

The most important step is setting up permissions — deciding who can read pages, who can edit them, and who can delete them. Most wikis let you create groups: for example, "Editors" can change any page, "Viewers" can only read, and "Admins" can change settings. Start by making your wiki readable to everyone who needs it but editable only by people you trust. You can always open it up later if you want more people contributing.

After permissions, configure the basic settings: the wiki's name and description, whether to require people to log in before viewing, and what the homepage looks like. Most platforms have a settings or administration panel where you can do this without touching any code. Take time to set these correctly at the start — changing them later can be confusing for people who are already using the wiki.

Creating your first pages and establishing a structure

Start with a homepage that explains what the wiki is for and points people to the main sections. Something like: "This wiki documents how our customer support team handles tickets. Start with Getting Started if you're new, or search for your question above." This takes 15 minutes to write and saves people from wandering around lost.

Next, create a style guide — a page that shows people how you want pages formatted. Include examples: "Use a heading for each section," "Include a table of contents at the top of long pages," "Link to related pages at the bottom." This sounds like extra work, but it prevents your wiki from becoming a mess of inconsistent formatting that's hard to read.

Then create a table of contents or category structure. Decide whether you'll organize by topic (Sales, Engineering, HR), by function (Procedures, Troubleshooting, Reference), or by audience (New Employees, Managers, Customers). Most wikis let you create categories or namespaces — sections that group related pages together. Start with 5 to 8 main categories; you can add more as the wiki grows.

Finally, create 2 to 3 starter pages in each category — not complete, but enough to show the pattern. For example, if you're documenting procedures, create one full procedure page as a template, then create stub pages (just a heading and a few bullet points) for the other procedures you know you need. This gives people something to expand on instead of a blank page.

Populating your wiki with existing documentation

You probably have information scattered across email, Google Docs, Slack, and people's heads. The fastest way to build your wiki is to move that information into it. Start by making a list: what documents do people ask for most? What procedures do new team members need to learn? What questions come up repeatedly in Slack?

Assign each piece of documentation to someone — don't try to do it all yourself. Give them a deadline (a week or two) and a template to follow. They don't need to write it from scratch; they can copy from the old document and clean it up. The goal is to get information into the wiki quickly, even if it's not perfect. You can improve it later.

As people add pages, watch for duplicates and overlaps. If two people wrote about the same topic, merge them into one page and delete the duplicate. Link related pages to each other so people can navigate between them. This takes ongoing work, but it's worth it — a wiki with 50 well-organized pages is more useful than one with 200 pages scattered randomly.

Getting your team to actually use the wiki

The hardest part of running a wiki is getting people to use it instead of asking you questions or searching their email. Start by making it easy: put a link to the wiki in your team chat, your email signature, and anywhere else people look for information. When someone asks you a question that's answered in the wiki, send them the link instead of answering directly.

In your first team meeting after launching the wiki, spend 10 minutes showing people how to search for a page, how to edit one, and how to create a new page. Answer questions. Then ask them to move one piece of documentation into the wiki that week. Small, specific asks work better than "please start using the wiki."

Celebrate early wins. When someone creates a useful page, mention it in your team chat. When the wiki saves someone time ("I found the answer in the wiki instead of asking"), point it out. This builds momentum and shows people the wiki is worth their effort.

Maintaining your wiki over time

A wiki that nobody maintains becomes outdated and useless. Set aside 30 minutes every week to check for pages that need updating, fix broken links, and delete information that's no longer true. If your wiki is large, assign this task to a team member or rotate it among several people.

Create a rule: if you change a procedure, update the wiki page about it the same day. If you discover a page is wrong, fix it immediately. If you're not sure whether something is still accurate, add a note at the top saying "Last checked on [date] — please verify this is still correct." This keeps the wiki trustworthy.

Every few months, ask your team: what's missing from the wiki? What pages are hard to find? What would make the wiki more useful? Use their answers to reorganize categories, add new pages, or improve the search function. A wiki that grows with your team's needs stays relevant.

Frequently Asked Questions

Can I move my wiki to a different platform later?

Yes, but it takes work. Most wiki platforms can export your pages as files, and you can import them into another platform, though formatting sometimes breaks. Start with a platform you think you'll stay with, but don't let this stop you from beginning — moving a wiki with 100 pages is much easier than maintaining scattered documentation forever.

What if someone deletes important information by mistake?

Every wiki keeps a history of changes, so you can see what was deleted and restore it. Click the page history or version history button (the exact name depends on your platform), find the version before the deletion, and restore it. You can also see who made the change, so you can ask them what happened.

Do I need to pay for a wiki?

Not necessarily. MediaWiki is free if you host it yourself. Notion and Fandom have free tiers. Confluence charges money but offers a free tier for small teams. The cost depends on how many people need to edit, how much storage you need, and whether you want someone else handling the technical work.

How do I prevent people from editing pages they shouldn't?

Use permissions. Most wikis let you lock pages so only certain people can edit them, or set the whole wiki to read-only for most people and editable only for a group you trust. You can also require approval before changes go live, though this slows things down. Start permissive and tighten permissions only if you have a real problem.

What's the difference between a wiki and a shared Google Doc?

A wiki is designed for many pages that link to each other and are organized by topic. A Google Doc is better for a single document that a few people edit together. If you have more than 10 pages of documentation, a wiki is easier to navigate and maintain. If you have one or two documents, Google Docs is simpler.