I’m using wpmu for short – wordpress multisite, im well aware its integrated part of wordpress now and i am using the latest version.
What I’m asking, apps, themes, server config aside:
IS wordpress multisite, with 4 childthemes plus the default main site (so 5 sites in total) more efficient on a server than 5 separate wordpress single installs?
I theory i suspect it should be, as only 1 wordpress instance is installed and running, but all childthemes work off of this instance, rather than their own instance – as all the child themes seem to reflect virtual resources if needed (such as images etc).
But comfirmation from a education source would be appreciated.