What is the difference between antivirus and EDR?

Antivirus blocks known malicious files. EDR (endpoint detection and response) also watches behavior on the device, detects suspicious activity like ransomware patterns, and lets responders isolate the device and investigate.

Managed EDR is EDR software monitored by a team of analysts who review alerts, investigate threats and take response actions, such as isolating an infected laptop, on your behalf.

Do small businesses need EDR?

Increasingly, yes. Ransomware targets small businesses, and many cyber-insurance policies now ask whether EDR is installed on all endpoints.

Is EDR enough on its own?

No. It works best alongside regular patching, MFA, device management and backups. EDR catches what gets through; the basics stop most attacks from starting.

Managed EDR vs Antivirus: What Small Businesses Need

The difference between antivirus and EDR, why managed EDR matters for small businesses, what it costs, and how patch management and device control fit in.

Traditional antivirus was built for a world of known viruses. Today's attacks use stolen credentials, legitimate tools and ransomware that changes too fast for signature lists. That is why endpoint detection and response (EDR) has become the standard, and why managed EDR is the practical choice for small businesses without a security team.

Antivirus vs EDR

Antivirus compares files against a list of known threats and blocks matches. It is useful, but it misses new malware and attacks that use legitimate tools.

EDR watches what happens on each device: processes, network connections, file changes and logins. It flags suspicious behavior, such as a program encrypting many files at once, and lets a responder isolate the device, stop processes and investigate what happened.

Why managed EDR?

EDR produces alerts, and alerts need someone to read them. A small IT team cannot watch a console at 3 am. With managed EDR, analysts monitor alerts around the clock, investigate what is real and take agreed actions immediately, then report back with what they found.

Protecting company laptops from ransomware

What else endpoint security needs

Patch management: most attacks exploit known, unpatched vulnerabilities.
MFA on every account, especially email and remote access.
Device management so every laptop is encrypted and configured the same way.
Least-privilege access: staff should not work as local administrators.
Backups that are isolated and tested.

We cover these fundamentals in more detail in endpoint security basics every small business gets wrong.

What does managed EDR cost?

Managed EDR is usually priced per endpoint per month, combining the EDR license and the monitoring service. That is far less than hiring security staff to watch alerts 24/7, and it often satisfies cyber-insurance questions about endpoint protection.

How to choose a provider

Which EDR platforms do they support?
What actions will they take without calling you first?
How do they handle patching and device compliance?
What reporting will you receive?

See our managed endpoint security and patch management service. If you want monitoring across your whole environment, not only endpoints, compare it with managed SOC services, or read MDR vs managed SOC.

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