We at MechCloud call it micro app architecture where custom components written by our partners and customers can be hosted in a private network and consumed at runtime. This makes it easy to start with a vuejs application where you just build components specific to your use case (e.g. edtech platform, portal, intranet, content management system etc) and we take care of multenancy, data residency and every other features which are commons across SaaS applications.
Unlike micro frontend, micro app in our case are configured at runtime and so don't require any change in the host application which is a SaaS application in our case.