Running software is something that most of us do without thinking about it. We run in “on premises”—our own machines—or we run it in the cloud – on somebody else’s machines. We don’t always think about what those differences mean, or about what assumptions we’re making about the securtiy of the data that’s being processed, or even of the software that’s doing that processing. Specifically, when you run software (a “workload”) on a system (a “host”) on the cloud or on your own premises, there are lots and lots of layers. You often don’t see those layers, but they’re there.