WordPress vs headless CMS for B2B websites

When a company plans a new website, one question comes up early: WordPress, or a modern headless CMS? Both are valid choices. The right one depends on what the website has to do, who maintains it and how much it needs to grow. This article compares them honestly, without dogma.

What is the difference?

WordPress is a traditional, "coupled" content management system: content, design (the theme) and functions (plugins) live in one application that runs on a PHP server and builds each page when it is requested.

A headless CMS such as Sanity, Contentful or Strapi only manages content. The website itself is a separate application, often built with a framework like Next.js, that fetches the content through an API and delivers pages as pre-built, fast HTML. "Headless" means the CMS has no front end of its own.

Comparison by criteria

Editing

WordPress is familiar to many editors, and a page builder lets marketing teams arrange pages themselves. The downside: with enough freedom, every page eventually looks different, and layouts break.

A headless CMS works with structured content: an editor fills in fields such as title, intro, benefits, FAQ and case study, and the website presents them consistently. With live preview, editors still see their changes on the page before publishing. Less freedom in layout, more consistency, and the same content can feed several channels.

Speed

A standard WordPress site with a heavy theme and many plugins is often slow without careful optimisation and caching. A headless website with pre-built pages, optimised images and little JavaScript is fast by design. Speed matters for visitors, for conversions and for Google's Core Web Vitals.

Security and maintenance

WordPress itself is well maintained, but its popularity makes it the most common target for attacks, and most vulnerabilities come from plugins. A WordPress site needs regular updates of core, theme and plugins, and each update can break something.

With a headless setup, the public website is mostly static files without a database or admin login on the same server. The attack surface is much smaller, and the CMS is operated and secured by the provider.

GDPR

Both can be operated in a GDPR-compliant way. With WordPress, the risk usually comes from plugins and themes that quietly load Google Fonts, tracking or external scripts. With a custom headless website, every external request is a deliberate decision in the code, which makes compliance easier to control and document. Our GDPR checklist for company websites lists what to check either way.

Multilingual content

WordPress handles multiple languages through plugins, which works but adds complexity. A headless CMS can model translations directly in the content, field by field, and the front end can build clean language-specific URLs, hreflang tags and sitemaps. For a German-English B2B website, this is a real advantage.

Costs

WordPress usually wins on initial cost: themes, plugins and many available developers. Ongoing costs for updates, plugin licences, security and performance work are often underestimated.

A headless website costs more to build, because the front end is developed individually. Running costs are usually low: hosting for static sites is inexpensive, and many headless CMS offer free or affordable plans for company websites.

When WordPress is the better choice

• A simple website with standard pages and a small budget.
• The marketing team wants to build new landing pages entirely on its own with a page builder.
• You need a specific plugin ecosystem, for example for a membership area or a small shop.
• Your internal team or agency already knows WordPress well and maintains it reliably.

When a headless CMS is the better choice

• Performance and SEO are business-critical, for example when the website is your main source of leads.
• The website is multilingual and should stay structured as it grows.
• Content is reused in several places: website, app, portal, product data.
• Security requirements are high, or you want as little maintenance as possible on the public site.
• The website has interactive features such as calculators, configurators or multi-step forms connected to a CRM.

A practical example

This website is built as a headless setup: Next.js for the front end, Sanity as the CMS, hosted on Vercel in Frankfurt. Editors change texts, case studies and articles in Sanity Studio and see the change live within seconds. Forms, the app estimator and lead notifications are part of the same code base, and no external script loads before consent.

Conclusion

WordPress is a good, pragmatic choice for simple sites and teams that know it well. For B2B companies whose website must be fast, multilingual, secure and connected to sales, a headless CMS is usually the better long-term investment. We build both kinds of projects with a clear recommendation for your situation. See our web development page.

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