Policy & compliance overview, closing visibility gaps, identifying & mitigating security vulnerabilities, and investigating breaches are the roles that make up the building blocks of  the AvCISO or ‘Advanced Virtual Chief Information Security Officer’.

Implementing the top 10 cybersecurity fundamentals like developing an asset management program, identifying and protecting critical data, Identifying and closing network visibility gaps will ensure highest level of security readiness. 

Increasing your security posture in an enterprise environment begins with identifying and closing visibility gaps. These processes will help your team identify visibility gaps, understand adversary techniques, common network defense methodologies,  and and how to properly implement them.

There are many articles/books that are pro-Red Teaming, but I haven't seen many that give a very high level on how to organize/run a Red Team. I have some pretty in depth experience on being part of a Red Team, and will share my knowledge here, but let me start by saying that there is really no right answer here.