What is Endpoint Detection and Response (EDR)?
EDR is modern endpoint security software that detects, investigates, and responds to threats on every laptop, desktop, and server in real time - replacing traditional signature-based antivirus.
Traditional antivirus relied on signatures of known malware. EDR adds behavioral monitoring, automatic isolation of compromised endpoints, forensic logging, and centralized response tooling. Major products include Microsoft Defender for Business, SentinelOne, CrowdStrike Falcon, and Sophos Intercept X.
EDR is now expected by every security reviewer - Norton, McAfee, and other consumer-grade products specifically don't qualify.
Microsoft Defender for Business is included with Microsoft 365 Business Premium ($22/user/mo) and is sufficient for most small offices. SentinelOne or CrowdStrike for organizations >50 endpoints or with elevated threat profile.
Why it matters for Florida small business
Your insurance carrier will ask 'what EDR do you run' on the renewal questionnaire. The answer 'Norton 360' will trigger a rate increase.
What to do
Inventory every endpoint and confirm an enterprise EDR product is installed and reporting to a central console. Microsoft Defender for Business is the default for offices on M365.