The most powerful capability added to an NG SIEM is the capability to perform automated responses to known threats that are predefined by incident response playbooks.
Unlike their first-generation SIEM solutions, NG SIEMs are capable of pulling event data from applications and systems as well as stacking workflow automation on top of orchestration, such as pushing response actions to devices like firewalls or IPSs (intrusion prevention systems) in response to detected threats.
This makes NG SIEM similar in capability to SOAR technology. And this is why there’s the current confusion in the market.
Finally, NG SIEM solutions have integrated threat hunting capabilities, allowing analysts to uncover suspicious activity and vulnerabilities in their environment, as well as monitor threat intelligence feeds to uncover potential issues, adversaries and indicators of compromise.