About this interactive
Anti-malware looks for known malicious code, so it misses anything new. Endpoint detection and response (EDR) takes a different tack: it watches one machine's behavior, learns what is normal for that endpoint, and flags anomalies, a sudden burst of outbound traffic, say, rather than matching a signature.
XDR, extended detection and response, broadens that beyond a single endpoint, correlating behavior across endpoints, email servers and other services to see a threat moving across the environment as one picture.
MDR, managed detection and response, is about who runs it: you set up the system but hire a managed service provider to operate and monitor it, useful for a smaller company that cannot watch everything itself, and the provider also sees trends across its other clients. To sort a card, ask whether it is scoped to one endpoint (EDR), extended across the environment (XDR), or run by an outside provider (MDR).
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