They're generally "low power". -On average less data is transferred - even in modern frameworks bundles still weigh more than multiple static pages. -Small(or

They're generally "low power". -On average less data is transferred - even in modern frameworks bundles still weigh more than multiple static pages. -Small(or non-existent) JS bundles mean much less time/energy spent compiling - this is currently the largest task when rendering a page for the first time. Both of these advantages are especially visible on mobile devices.