CMS (content management system) – what it is and how to choose the right platform

Definition

A CMS (content management system) is a system that lets you create, edit and publish content on a website without programming. It acts as the website's admin interface, where you manage text, images, pages and structure.

What is a CMS? A concrete example

‍Imagine a company blog. Instead of coding every post as a page of its own, you build a template once – with fields for heading, body text, image and date – and then create each new post as an entry in the CMS. The same principle applies to other recurring types of content: case studies, products, team members or frequently asked questions. The CMS keeps the content itself separate from how it is displayed, so an editor can publish and update hundreds of pages without touching a line of code. Content can be entered in several ways – manually, via CSV import or by prompting an AI connected to the CMS via MCP.

How does a content management system work?

A CMS splits your website into two layers: a backend where you manage content – text, images, pages, metadata – and a frontend that shows it to visitors. You log in to an admin interface, make your changes, and the system publishes them automatically in line with the website's design and structure. No code is needed for day-to-day editorial work.

Which CMS suits your business?

Choosing a CMS is one of the most important technical decisions you make for your website – and one of the most underestimated. The wrong platform creates technical debt, restricts the flow of content and makes every update unnecessarily time-consuming. The right platform fades into the background and lets the team focus on content and growth.

There are three main categories:

• Traditional CMS (WordPress, Drupal) – Content and design are tied together in the same system. Easy to get started, a broad plugin ecosystem, but technical debt grows quickly. WordPress powers close to half of all websites but needs ongoing security updates and maintenance to keep up.
• Visual CMS (Webflow) – Design control and CMS in one system. You see exactly how the page looks while you edit. Less technical debt, better Core Web Vitals out of the box, but limited for complex content models with many relationships.
• Headless CMS (Sanity, Contentful, Storyblok) – Content is managed separately from presentation and delivered via an API to any frontend. Maximum flexibility and channel-independent distribution, but it requires developer skills and a separate frontend stack.

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For an in-depth review of CMS options for larger organisations, see Website platform for large and growing companies: Webflow, headless CMS or enterprise?

CMS and SEO – not automatic

A CMS does not affect your rankings directly – but it affects what is possible. The platform's code structure, load times and how easy it is to implement structured data and manage metadata determine how much friction SEO work runs into in practice.

Modern platforms such as Webflow and headless stacks generally perform better technically than heavily plugin-dependent WordPress websites. But it always depends on how the website is actually built. A well-built WordPress website beats a poorly configured Webflow website.

What a CMS actually handles

The core functions are the same whatever the platform:

• Create, edit and publish pages and posts
• Manage images and media files
• Set user roles and permissions
• Control URL structure and redirects
• Manage metadata, titles and SEO settings

The differences show as the website grows: how complex content relationships can be, how easy it is to integrate external systems and how much ongoing technical maintenance is needed.

Headless CMS – what is it and when does it fit?

A headless CMS separates the content layer from the presentation layer. In a traditional CMS these are tied together and the page is rendered on the server. In a headless CMS, content is stored and structured separately and delivered via an API to a standalone frontend – a React app, a mobile app, a digital sign or any other channel. That gives maximum flexibility: the same content can be shown in several channels without being duplicated. A headless CMS is best suited to organisations with complex content flows, multi-channel distribution, high demands on frontend performance or AI integrations. It does, however, require developer skills for the frontend stack. Popular options include Sanity, Contentful, Storyblok and Strapi.

Popular CMS platforms – an overview

The market for CMS platforms covers everything from simple marketing websites to enterprise content architectures:

• WordPress – The world's most widely used CMS. Open source, a huge plugin ecosystem, but needs ongoing maintenance and security work.
• Webflow – A visual CMS with built-in design control. Popular for marketing websites that do without plugins.
• Sanity – A headless CMS with flexible content modelling. Popular for AI integrations and complex data structures.
• Contentful – An enterprise-oriented headless CMS with strong support for multi-channel distribution.
• Sitevision – Dominant in the public sector in Sweden, with built-in support for accessibility and GDPR.
• HubSpot CMS – Integrated with HubSpot's marketing platform.

Which CMS should you choose? Different tools for different needs

Choosing a CMS comes down to two questions: what should the website achieve, and who will run it?

• For the marketing department: We continuously research and test the options on the market, and Webflow is our default choice for professional, scalable websites that will mainly be run by marketing departments. It gives design freedom without compromising on performance.
• For complex needs: For complex distribution and advanced content structures, a coded website with a headless CMS such as Sanity or Contentful has become a realistic option for more and more companies as AI makes development more efficient. Read how to build coded websites with AI and keep editorial control with a headless CMS.
• For e-commerce: Shopify and WooCommerce are the obvious leaders here.

Considering an enterprise website with complex infrastructure? Read our review of website platforms for large and growing companies.