WordPress

WordPress is an open source content management system (CMS) that lets you create, publish and manage a website without building every function from scratch. Launched in 2003 as a blogging engine, it now powers about 42% of all websites according to W3Techs, far ahead of any other CMS. It is an excellent choice for an editorial or brochure site, and a questionable one as soon as you ask it to become a business tool.

How WordPress works

WordPress rests on three layers: the core software, free and maintained by a worldwide community, a theme that defines how the site looks, and extensions (plugins) that add features, from contact forms to online stores. Since 2018, the Gutenberg block editor lets you compose pages visually, and Full Site Editing extends that principle to the whole site on recent themes.

Two useful clarifications for an executive. First, WordPress.org, the free software you can host wherever you want, and WordPress.com, the commercial offering of the company Automattic, are two different things. Second, the project is not immune to governance tensions: the legal conflict that opened in late 2024 between Automattic and the hosting company WP Engine, still ongoing in 2026, was a reminder that this open source ecosystem also depends on the decisions of one central player.

WordPress's real strengths

• A global standard: finding a vendor, a theme or an extension is never a problem. No other website technology has an ecosystem this vast.
• Excellent for editorial: blogs, brochure sites, content sites. Managing articles, media and basic SEO has been battle-tested for twenty years.
• Low entry cost: the software is free, hosting is cheap, and a decent site can be live within weeks.
• You stay the owner: open source software, hostable anywhere, exportable data. No vendor lock-in.
• Team autonomy: a marketing team publishes, edits and organizes content without depending on a developer.

The limits nobody sells you

WordPress's strength, its extension ecosystem, is also its main structural weakness. Four topics deserve a decision-maker's attention:

• Plugin stacking: every need finds a plugin, and every plugin adds third-party code of uneven quality that will have to be maintained. Beyond a few dozen extensions, the site becomes a fragile assembly.
• Security: the WordPress core is seriously maintained, but the vast majority of vulnerabilities published in the ecosystem concern extensions and themes. An unmaintained WordPress site becomes an automatically attacked target.
• Performance: generic themes and page builders load a lot of unnecessary code. Getting a fast site requires real optimization work, rarely budgeted upfront.
• Technical debt: core, plugin and PHP updates, cross-incompatibilities, customizations made directly in the theme that disappear at the next update. Maintenance is not optional.
• Business logic: WordPress manages content. As soon as you need calculation rules, approval flows or structured business data, you end up bending the tool instead of building the right one.

The warning signs

• Your site relies on dozens of extensions and nobody dares to run updates anymore.
• Part of your business runs on plugins bent away from their purpose: quotes, bookings, an improvised client area.
• The site slows down, and every optimization attempt breaks something else.
• Your vendor bills corrective maintenance every month without anything durably improving.
• You no longer dare to touch the site for fear of breaking everything.

The PeakLab perspective

At PeakLab, a custom web development agency in Paris, we never push anyone off WordPress on principle. When a client arrives with a working editorial WordPress site, we leave it in place. The question arises when the site carries business functions: bookings governed by precise rules, quotes calculated from your real pricing, a client area, data that needs to be structured and put to work.

Two paths open up at that point. The first: keep WordPress for content and build the business application next to it, on a subdomain, with the same visual identity. The second: a custom web application that also handles content, when the site and the tool need to merge. In both cases, the delivered code belongs to you, runs on the hosting of your choice, and the business logic finally moves out of plugins.

When to act

As long as WordPress covers your editorial needs, keep it and maintain it seriously. Moving to custom development is justified by concrete criteria:

• A function essential to your offer relies on an assembly of plugins nobody truly masters.
• The combined cost of plugin licenses, corrective maintenance and lost hours approaches the cost of dedicated development.
• Your customer data deserves better than storage scattered across several plugins.
• Security becomes a recurring worry rather than a managed line item.
• Your business grows and the site becomes the limiting factor in your organization.

The right approach is to separate what belongs to content, where WordPress excels, from what belongs to your business, where it improvises. That diagnostic is quick, and it avoids endlessly funding the limits of a tool that was never designed for your need.