• Common API Expert teams with dedicated responsibilities With an abstract enough API, teams can focus on one part rather than the whole site. Node.js experts focus on the frontend, WordPress experts on the backend, etc. Better recruiting around other languages Far more talented Node.js developers out there than WP/PHP. Use the tools best for the job Gatsby, React, etc. are far better and more flexible at solving the frontend problem; don’t rely on plugins. Interchangeable frontends Again, requires an abstract API - switch out the frontend to the newest and best framework you need. Many heads! Same backend consumed by multiple frontends with different purposes. Reasons to decouple your apps