Compare · MSP vs MSSP

MSP vs MSSP — when you need each, and when you need both.

The two acronyms get used like synonyms, and the difference matters more than most buyers realize. An MSP runs your IT operations. An MSSP runs your security operations. They are not the same job, and most shops only do one of them well. We do both under one contract, which sounds like a marketing line until something actually goes wrong and you stop watching two vendors blame each other.

What an MSP does.

An MSP keeps your IT environment running. The job is operational stability: keep email working, keep the network up, keep the laptops patched, keep the backups green, fix things when they break.

Typical MSP scope: helpdesk, Microsoft 365 administration, device management, network monitoring, patch management, backup oversight, vendor coordination. Most MSPs do not have a Security Operations Center. If they say they "do security", that usually means they install antivirus and forward alerts.

What an MSSP does.

An MSSP runs your security operations. The job is detection and response: watch for threats 24/7, triage what matters, contain incidents before they spread, document evidence for auditors and insurers.

Typical MSSP scope: 24/7 SOC monitoring, SIEM operations, threat detection, EDR / XDR operations, incident response, threat hunting, compliance evidence collection. Most MSSPs do not run your IT. They expect you (or your MSP) to handle helpdesk, devices, and operations. The handoff between them is where most things break.

When you need just an MSP.

Smaller business, simple stack, low regulatory exposure, no formal security program required. You want IT to work. You can accept that defending against modern attackers is not the priority right now. EFROS Core IT covers this scope cleanly.

When you need both.

You're a mid-market company (roughly 20 to 300 users). You have to pass an insurance questionnaire. Your clients audit your vendor security. You have a regulator to answer to (HIPAA, PCI, FFIEC, NYDFS, CMMC). You hold sensitive data — customer records, payment data, health records, privileged client matter. A successful BEC or ransomware event would be a board-level event.

At that point the cost of a compromise dwarfs the cost of the MSSP. EFROS Secure Operations or Fortress SOC covers this scope.

Why one contract beats two.

When IT and security are split between two vendors, every incident produces a handoff. The MSSP detects something. The MSP has to act on it. The MSP says it's not actionable until they get a ticket. The ticket sits because their team is on a Microsoft 365 outage. Time-to-contain stretches because the SLAs don't compose. Run both under one contract and the handoff disappears — the same team that detects also contains.