Is there a Pantheon-like host for multisite?

Hi,

Is there a web host similar to Pantheon that support WP Multsite?

Pantheon explicitly do no support multi site.

Does anyone in wpmudev know of a managed Wordpress host that allows a dedicated server for your Multsite install?

As in, their service keeps Wordpress multi site running fast and secure, whilst we can just get back to living in Wordpress?

Thanks for any suggestions.

Cheers,

Johnny