SIEM vs Managed SIEM vs MDR

Separate the logging platform from the people who operate it and respond to threats.

Compare	SIEM	Managed SIEM	MDR
What it is	Software that collects logs, correlates events and supports investigations.	A service that operates, tunes or monitors a SIEM.	A service that investigates and responds to threats.
Who operates it	Your security or IT team.	The provider, or the provider and your team together.	Provider analysts handle the agreed investigation and response work.
Useful when	You need centralized logging, retention and visibility.	You need help maintaining the SIEM and tuning detections.	You need investigation and response capacity.
Check first	Who will investigate alerts and take action.	Whether containment and incident response stay with your team.	Whether you still need a separate SIEM for logs and compliance retention.

Before you choose