As a dev, it was really nice to use Persona and not have to build an authentication system for each project.<p>Now we use Authentic (<a href="https:&#x2F;&#x2F;github.com&#x2F;davidguttman&#x2F;authentic" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;davidguttman&#x2F;authentic</a>). In some ways it&#x27;s better (e.g. get to control your own UI&#x2F;UX flows), but it would have been nice to just have Mozilla run&#x2F;host everything.