The best use of this feature is 'Chrome apps' or "Edge apps" where a web version of an app (like facebook messenger or whatsapp) can live inside the process of

The best use of this feature is 'Chrome apps' or "Edge apps" where a web version of an app (like facebook messenger or whatsapp) can live inside the process of the browser instead of their own whole separate process, drastically reducing memory usage and energy consumption. Though it's kind of a workaround for the electron app anti-pattern.