I've just realised that a) I've used precisely none of them, and b) Passport isn't even on the list! I really do need to look at all of this stuff again, becau

I've just realised that a) I've used precisely none of them, and b) Passport isn't even on the list! I really do need to look at all of this stuff again, because I'm very open to not running my own VMs/services for a couple of apps.