What is the difference between EDR and MDR?

EDR (Endpoint Detection and Response) is a software tool installed on devices like laptops and servers that monitors for threats and can automatically contain them. MDR (Managed Detection and Response) is a fully managed service where a team of security analysts monitors your environment 24/7, investigates alerts, and responds to incidents on your behalf. EDR is the technology; MDR is the team that operates it.

Do I need XDR if I already have EDR?

Not necessarily. XDR extends detection beyond endpoints to cover network, cloud, email, and identity systems. If your environment is primarily on-premises with traditional endpoints, EDR may be sufficient. XDR becomes valuable when you run a hybrid or multi-cloud environment where threats can move across multiple layers that EDR alone cannot see.

Can MDR replace an in-house security team?

For most mid-market businesses, yes. A proper 24/7 security operations center requires at least five to six analysts plus tooling and management overhead. MDR providers deliver equivalent monitoring, threat hunting, and incident response capabilities at a fraction of the cost by spreading that investment across multiple clients.

How much does MDR cost compared to building an internal SOC?

MDR services typically cost a fraction of what it takes to staff an internal SOC. A single senior security analyst in Canada costs over $100,000 per year, and 24/7 coverage requires multiple analysts working in shifts. MDR providers amortize these costs across their client base, making enterprise-grade security accessible to mid-market organizations.

Is XDR just a marketing term?

No, but it is often over-marketed. XDR represents a real architectural shift, correlating telemetry across endpoints, network, cloud, and identity into a single detection layer. The value is genuine for organizations with complex environments. However, many vendors rebrand existing products as XDR without delivering true cross-layer correlation. Ask vendors which data sources are natively supported and what integration effort is required before committing.