AV vs EDR vs MDR

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May 05, 2026By Allums Tech Services

Ever wonder what the difference is between antivirus, EDR, and MDR? They sound similar, but they protect your business in very different ways.

Antivirus is the original. It checks files against a list of known threats and blocks the bad ones. It's a fine starting point, but if a threat isn't already on the list, AV usually misses it.

EDR (Endpoint Detection and Response) is a big step up. Instead of only looking for known files, it watches behavior on your devices in real time. If something acts shady, like a process trying to encrypt files or call out to a strange server, EDR flags it and can roll back the activity.

MDR (Managed Detection and Response) is where it really comes together, and it's what we recommend for our clients. You get all the EDR muscle, plus a dedicated team of security analysts watching your environment 24/7. When an alert pops at 2 a.m., somebody is awake, investigating, and shutting it down before it spreads. That's the part most small businesses are missing, and it's the part that turns a security tool into actual peace of mind.

If you're still running antivirus alone, you've got a starting line, not a finish line. Happy to chat if you'd like to see what MDR could look like for your team.