Is anyone out there know more information on Operationally Critical Threat, Asset, and Vulnerability Evaluation (OCTAVE)?

what specific details you want to know about this?I have used it for Threat Modeling of critical infrastructure as well as general monitoring. NIST framework is similar to OCTAVE however it all depends on how large is your environment/Enterprise and what is the focus. if it is Cyber then you can start with Threat Profiles and Actor profiles.

drop me a note if you need more inf

-Omid