My understanding with toit vm you have can have multiple programmes running and if one crashes, the others continues. The vm, etc, allows live update and or to deploy something new.

If you're interested in hearing Kasper talk about toit, he did a long livestream the other day, the toit bit is at the 1hr 34min mark. https://youtu.be/k7YITNpvcaY?t=5640