For Prisma Access, this is usually included
with your Prisma Access license.
You can set up a Palo Alto Networks firewall to submit unknown
samples to one of the Palo Alto Networks-hosted Advanced WildFire
public clouds, the U.S. Government cloud, a locally-hosted WildFire
private cloud, or enable the firewall to forward certain samples
to one of the Advanced WildFire public cloud options and certain
samples to a WildFire private cloud: