When an MSSP detects something suspicious, they send you an alert and your team investigates. When an MDR provider detects something, their analysts investigate and take action directly, isolating endpoints, disabling accounts, or containing the threat before calling you.
Side-by-side comparison
| Dimension | MSSP | MDR |
|---|---|---|
| Core function | Monitor & alert | Detect, investigate & respond |
| Response | Your team responds | Their team responds |
| Investigation | Minimal triage | Deep investigation per alert |
| Alert volume | High, you handle false positives | Low, they filter noise |
| Threat hunting | Rarely included | Often included |
| Price (per EP/mo) | $3–15 | $8–35 |
| Internal team needed | Yes, to respond to alerts | Minimal, provider handles response |
How to decide
The choice comes down to who investigates and responds. If your team has the capacity to work through alerts, triage false positives, and execute containment, MSSP gives you monitoring at lower cost. If you want that work handled for you, MDR is the better fit.
Three questions help clarify which side you fall on:
Can your team investigate and respond to alerts 24/7?
If yes, MSSP monitoring may be sufficient. If no, you need someone to do that work, which is what MDR provides.
Is your primary need compliance reporting and log retention?
MSSPs are built around these functions. MDR providers rarely include compliance reporting in base contracts.
Do you need broad infrastructure monitoring (firewalls, VPN, network devices)?
MSSP scope traditionally includes these. MDR focuses on endpoint, cloud, identity, and SaaS, and may not cover network infrastructure as deeply.
Cost comparison
MSSP is cheaper per endpoint, but factor in the internal cost: you need analysts to investigate alerts, triage false positives, and execute response. An MSSP generating 50 alerts/day at $5/endpoint can cost more than MDR at $20/endpoint once you count the salary of analysts needed to work those alerts.
The lines between MDR and MSSP are also blurring. Many MSSPs now offer MDR-labeled tiers alongside their traditional monitoring services, and some MDR providers are expanding scope to include log management and compliance reporting. When evaluating, focus on what's delivered rather than what the service is called.
FAQ
What is the main difference between MDR and MSSP?
MSSP monitors your security tools and sends you alerts. MDR detects threats, investigates them, and takes response actions on your behalf.
Is MDR more expensive than MSSP?
Generally yes per endpoint, but MDR reduces internal team burden. Factor in the cost of analysts needed to respond to MSSP alerts.
Can I use both MDR and MSSP?
It's uncommon. Some organizations use MSSP for compliance-driven log management while MDR handles detection and response.