FortiCASB Questions

We're very intetested in it, but there isn't much documentation available just yet.

The datasheet infers that a FortiGate isn't required - what FortiCASB features are lost in such a configuration?

It also refers to use with a FortiAnalyzer, but it's quiet about FortiCloud Analysis, even though FortiCASB itself is a FortiCloud based service. What if the company does have a FortiGate with FortiCloud but no FortiAnalyzer?

Is there any documentation out there besides the Datasheet and White Paper?