WPMU vs WordPress MultiSite is there a difference anymore?

Since version 3.0 there is no such product as “multisite” neither by name nor by code (mostly anyway), it is just another configuration option of wordpress, one that requires some extra admin work to activate, but essentially it is not some separate code base.

When there is a reference to “multisite” today, it is a reference to the configuration, not a product. WPMU itself is a term I haven’t seen being used for years.

The merge ticket is #11644 and it was fixed/closed in the year 2010.

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