The document discusses using Meterpreter for post exploitation activities after gaining access to a target system. Meterpreter provides an advanced multi-function payload that injects itself into running processes to provide core and advanced command functionality through extensions in a more stealthy way than normal payloads. The document outlines how Meterpreter works and can be used for activities like enumeration, privilege escalation, information harvesting, and pivoting across a network during post exploitation.