Web design & AI
What Is a CMS? How It Works and How to Choose One
The plain-English definition, the types that matter, a comparison from someone who sells no CMS, and how Notablia runs without one.
What is a CMS? A CMS, or content management system, is the software you use to build and update a website from a dashboard: you write, upload photos and hit publish without touching code.
Close to 7 in 10 websites run on one, and WordPress takes the lion's share. But the most popular CMS isn't automatically yours: an online store and a dental practice in Austin need different things. Here are the types, a neutral comparison and a 30-minute way to choose.
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CMS meaning: what does CMS stand for?
CMS stands for content management system: software that keeps your content separate from your design so you can edit one without breaking the other.
A content management system is a program that lets you create, edit and publish the pages of your website from a dashboard, without writing code. It stores text and images in one place and the design in another, so you can rewrite a page or change the whole look without starting over.
What it isn't: it isn't your hosting, the server where the site lives, or your domain, which is its address. And if you landed here from a healthcare search, CMS also stands for the Centers for Medicare & Medicaid Services; Google mixes both. A CMS is one of the core pieces of web design, next to the domain, hosting and template.
How does a CMS website work?
Every CMS website has two sides: the dashboard, where you write and upload, and the public site your customers see. In between sit a database that stores every piece of content and a template that decides how it looks. Change the template and all 40 pages update at once.
Types of CMS platforms: traditional, SaaS and headless
There are three types of CMS platforms that matter to a business: traditional software you install, hosted SaaS you rent and headless systems that only serve content.
| Type | Examples | Who maintains it | Best for |
|---|---|---|---|
| Traditional (on your hosting) | WordPress, Joomla, Drupal | You or your agency | Full control |
| Hosted SaaS (monthly plan) | Shopify, Wix, Squarespace, Webflow | The platform | Owners who don't want servers |
| Headless (content only) | Strapi, Sanity, Contentful | Your developers | Brands with a site, an app and more channels |
What is a headless CMS?
A headless CMS stores and organizes content but doesn't display it: it sends the content to a website, an app or a screen, and each one renders it its own way. It's fast and flexible, but you need developers to build the part people actually see. For a bakery or an accounting firm, it's a sledgehammer to crack a nut.
CMS examples: WordPress, Shopify, Wix, Squarespace and Webflow
The most used CMS examples in the world are WordPress, Shopify, Wix and Squarespace, according to W3Techs' October 2026 count.
According to W3Techs, in October 2026, 32.1% of the websites it tracks used no CMS it could detect. The rest looks like this:
| CMS | Share of all websites | Best for | Watch out for |
|---|---|---|---|
| WordPress | 39.6% | Blogs, business sites and WooCommerce stores | Maintenance and plugin bloat |
| Shopify | 5.3% | Online stores | Paid apps that add up |
| Wix | 4.2% | Service businesses and local shops | Moving away later |
| Squarespace | 2.4% | Visual sites: photographers, restaurants | Fewer extensions |
| Webflow | 0.8% | Brand sites with custom design | The learning curve |
| Drupal | 0.6% | Large, complex sites | Needs developers |
Is WordPress a CMS?
Yes, and the most used one on the planet. It started in 2003 as blogging software and grew on themes and plugins: there are tens of thousands of them. That's its strength and its trap, because some sites run 40 plugins and crawl. There are two flavors: self-hosted WordPress.org, free software you maintain, and hosted WordPress.com, with paid plans.
WordPress vs Wix vs Squarespace: Which CMS Should You Pick?
These three cover most small business sites, and each one wins at something different. According to W3Techs, WordPress runs 39.6% of all websites, Wix 4.2% and Squarespace 2.4% (October 2026).
| WordPress | Wix | Squarespace | |
|---|---|---|---|
| Who runs the software | You or your host | Wix | Squarespace |
| What you pay | Free software, plus hosting | A free plan to try it, then paid plans | A 14-day trial, then a plan |
| Mobile Core Web Vitals pass rate | 45% | 74% | Not reported |
| Leaving later | You own the files and the database | Usually a rebuild | Check the export help page |
The pass rates come from the 2025 Web Almanac by HTTP Archive. WordPress results swing with hosting and theme, so a lean WordPress site on good hosting can beat both. Selling something? Squarespace's pricing page lists a 2% fee on store sales on its Basic plan and none on Core or Advanced.
Our pick by case: WordPress for a content-heavy site or a store on WooCommerce, Wix for a service site that one non-technical person will edit, Squarespace when looks come first, as with a photographer or a restaurant.
Free CMS: The Open Source Options and What Free Really Costs
A free CMS means one of two things: open source software you host yourself, or a free plan on a hosted builder. The first costs nothing to download and plenty to run. Hosting, domain, theme, backups and security updates are on you. Say you spend 3 hours a month on updates and backups at $30 an hour: that is $2,160 over two years, before you pay for hosting.
| Open source CMS | License | Share of all websites | The catch |
|---|---|---|---|
| WordPress | GPLv2 or later | 39.6% | Plugins and updates are on you |
| Joomla | GPL | 1.1% | A smaller ecosystem |
| Drupal | GPL | 0.6% | Needs a developer |
| Ghost | MIT | 0.1% | Built for blogs and newsletters |
The shares are W3Techs figures for October 2026. If you want free without hosting anything, Wix has a free plan to test the editor, and Squarespace gives you a 14-day trial. Ghost can be self-hosted for free, and its paid Ghost(Pro) service handles hosting, backups and security for you.
How to choose the best CMS for your website in 7 steps
The best CMS is the one that fits your type of site, the person who will edit it and what you can pay every year, not the most famous one.
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Define the site you need
Blog, online store, service business or portfolio. If you'll sell more than a handful of products, start with store platforms: Shopify or WooCommerce. If you're a freelancer showing your work, read how to make a portfolio first.
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Decide who will edit it and how often
If you'll update it weekly and you're not technical, put a visual editor first. If an agency touches it twice a year, ease of use matters less than speed and cost.
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Price it over two years, not one month
Add the plan or hosting, domain, theme, paid plugins or apps and, for stores, transaction fees. Many plans are cheap in year one and jump at renewal.
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Check that you can take your content with you
Search the official help center for how to export pages, posts and products. If leaving means copying by hand, the CMS owns you.
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Test the free plan with real pages
Build three real pages: home, one service and contact. No copy yet? Fill them with our lorem ipsum generator and time yourself. Want AI to draft the first version? See how to build a website with AI.
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Check the SEO and accessibility basics
You should be able to edit each page's URL, title tag and meta description, add alt text to images and meet WCAG compliance.
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Open the account in your name
The CMS account, domain and hosting go in your name or your company's. Your agency gets a user login, never ownership.
Act as an independent web consultant with no commissions from any platform. My business is [what you do and where], I need a [blog, store, service or portfolio] site, [who] will edit it about [number] times a month and my yearly budget is $[amount]. Compare WordPress, Shopify, Squarespace, Wix, Webflow and a static website in a table with: total cost over 2 years, who maintains it, ease of editing, how to export content and risks. Tell me which prices I need to verify on each official site, because they may have changed.
Static website: when you don't need a CMS (Notablia's case)
A static website doesn't need a CMS: it's prebuilt HTML pages the server hands over as they are, with no database and no admin dashboard.
Notablia is one of them. There's no WordPress behind it: each guide is a text file (MDX) with a short header for the title, publish date and keywords, and the Astro framework turns those files into HTML pages. Every morning an automated job rebuilds the site and publishes the guides whose date has arrived. In our Lighthouse runs, the site scores 99 for mobile performance.
| Static website | Website with a CMS | |
|---|---|---|
| Speed | Very fast: nothing to look up on load | Depends on hosting, theme and plugins |
| Security | No dashboard or database to attack | You must keep the CMS and plugins updated |
| Cost | Free or close to free hosting, such as Cloudflare Pages | Hosting or a monthly plan |
| Editing | You edit files, or add a headless CMS | A visual dashboard anyone can use |
When does it pay off? When your site rarely changes or you have someone technical in-house. If marketing edits it daily, stick with a CMS.
What CMS is this site using? How to check in one minute
To find out what CMS a site is using, look at its source code or use a browser extension that detects technologies. It takes a minute.
- Open the site and press Ctrl + U (Cmd + Option + U on a Mac) to view the source.
- Press Ctrl + F and look for clues:
wp-contentmeans WordPress,cdn.shopify.commeans Shopify andwixstaticmeans Wix. - Nothing? Try an extension like Wappalyzer. Still nothing? It may be a static or custom site.
Do it with your three closest competitors and you'll know what they're working with.
Frequently asked questions about CMS platforms
Is Wix a CMS?
Yes. Wix is a hosted CMS with a drag-and-drop website builder on top: you edit pages, blog posts and products from a dashboard, and Wix takes care of hosting, security and updates. According to W3Techs, it ran 4.2% of all websites in October 2026, third behind WordPress and Shopify. The trade-off is portability: moving a Wix site to another platform usually means rebuilding the design from scratch.
What is the most common type of CMS?
The most common type is the traditional, or coupled, CMS, where the editing dashboard and the public website live in the same system. WordPress is the clear example, with 58.3% of all sites that use a CMS, according to W3Techs. Hosted SaaS platforms like Shopify, Wix and Squarespace come next. Headless CMS platforms are growing among larger brands, but they are still a niche for small businesses.
What is a CMS in marketing?
In marketing, a CMS is the tool your team uses to publish and update content without waiting for a developer: landing pages, blog posts, product pages and campaign pages. A good marketing setup lets you edit page titles and meta descriptions, add tracking codes, create forms and test new pages fast. That is why marketers care about who controls the CMS: if every change needs a ticket, campaigns ship late.
What is the best CMS for SEO?
No CMS ranks a site by itself, so the best one for SEO is the one that lets you control the basics on every page. You need to edit title tags, meta descriptions, URLs and image alt text, add structured data, set up redirects and keep pages fast. WordPress with an SEO plugin gives the most control; Shopify and Wix cover the basics for small sites. Before you decide, test the speed of a real page: the 2025 Web Almanac found 74% of Wix sites passing Core Web Vitals on mobile against 45% of WordPress sites.
Is Shopify a CMS?
Yes, Shopify is a CMS built for online stores. You manage products, prices, inventory, orders and payments from one dashboard, plus regular pages and a blog. It is hosted, so you pay a monthly plan instead of handling servers. According to W3Techs, it is the second most used CMS in the world, on 5.3% of all websites. It shines when the store is the business; for a content-heavy site, WordPress gives you more room.
CMS vs CRM: what's the difference?
A CMS manages your website content; a CRM manages your customers. With a CMS you publish pages, articles and products. With a CRM you track contacts, deals and every conversation with each customer. They work together: the contact form on your site, which lives in the CMS, sends each lead to the CRM, where sales follows up. Some vendors bundle both, but they are still two different jobs.
What is Webflow?
Webflow is a hosted CMS with a powerful visual editor: you design the site almost like in a design app, controlling every margin and animation, and Webflow writes the code. Designers and marketing teams use it for polished brand sites. The catch is the learning curve: if you only need to update hours or prices, Wix or Squarespace are quicker. W3Techs puts it on 0.8% of all websites.