Headless Drupal vs a full migration
Stay
Headless Drupal
Next.js in front. Drupal and PHP stay behind it, so the patch treadmill stays too.
Leave
Full migration
Retire the PHP server. Content moves to Postgres with row-level security.
The middle option still runs PHP. The short version is on the comparison page.The comparison page says headless Drupal keeps PHP.
Drupal migration service · WordPress migration service