It's disappointing that the article lacks any actual examples of how this might be achieved. Take web apps for example - I imagine each micro-frontend loading

It's disappointing that the article lacks any actual examples of how this might be achieved. Take web apps for example - I imagine each micro-frontend loading in an iframe, which feels kind of icky. Alternatively, maybe you could build out a plugin architecture, where each micro-frontend is loaded as a plugin into the host. What other approaches can be used, while keeping the "feel" of a single, cohesive app?