Open-source and proprietary CMS consultant

Key points, November 2026

Choosing a CMS is not about popularity but fit. WordPress remains the most widespread (over 40% of websites in public measurements): a large ecosystem and talent pool, but also a more visible attack surface.

• Accessibility: the theme and plugins matter more than the core; test before buying.
• Performance: aim for good field-data Core Web Vitals; limit plugins and third-party scripts.
• Security and upkeep: regular updates, backups, version support dates.
• Architecture: traditional, headless or static depending on the editorial team.
• Total cost: licences, hosting, development, training.