Oftentimes projects need a way to serve multiple domains from the same installation or from the same codebase. In Drupal we have several ways to accomplish this, and this post will describe some architecture options that make this possible, as well as the relevant factors that can help you decide which option provides the best ‘fit’ for the implementation.

We’ll be looking at four distinct implementation choices: Classic Drupal Multisite, Domain Access or Mega Site, Distribution Profile, and an offshoot of the distribution profile called Custom Upstream.