The choice shapes endpoint visibility, after-hours coverage, staffing, and who owns incident response. People are the usual bottleneck: SANS's 2025 survey found 59% of respondents cite a lack of skilled personnel as a top detection challenge, and 56% name skills gaps as a leading response barrier.
This guide compares the two models, shows where each fits, and gives you criteria for choosing.
Key Takeaways
- EDR is endpoint software that collects telemetry, detects suspicious behavior, and supports response actions.
- MDR is a managed service that adds analysts, 24/7 monitoring, triage, hunting, and response.
- EDR suits teams with mature staff who can run alerts, tuning, and response themselves.
- MDR suits organizations that need round-the-clock coverage without building a SOC.
- Many organizations run both: MDR analysts operate on top of the EDR tool.
EDR vs MDR: Quick Comparison
| Dimension | EDR | MDR |
|---|---|---|
| Operating model | Software agent on workstations, servers, VMs, and supported mobile/IoT devices | Outsourced service where provider analysts run monitoring, investigation, hunting, and response |
| Coverage | Endpoint activity: processes, files, connections, user actions | Varies by provider; may correlate endpoint, identity, email, network, and cloud data |
| Alert handling | Generates alerts and can automate some containment; your staff tunes, reviews, and investigates | Analysts validate alerts, suppress false positives, prioritize, and send findings with context |
| Staffing | Needs internal expertise, playbooks, and after-hours coverage | Provider supplies the analyst layer; you keep governance and risk decisions |
| Cost | License fees plus deployment, tuning, training, and response staffing | Subscription fee versus the cost of building 24/7 expertise yourself |
Neither is universally cheaper. EDR looks inexpensive until you count the people who run it. MDR looks expensive until you price a night shift.
They are also complementary. An MDR service often uses EDR as its endpoint telemetry and response layer.
What Are EDR and MDR?
What is EDR?
Endpoint detection and response (EDR) is security technology that continuously records and analyzes activity on endpoints to spot suspicious behavior and support containment. Microsoft describes it as continuous endpoint monitoring, data analysis, detection, response, and threat hunting.
Core capabilities include:
- Endpoint telemetry such as process, network, login, registry, and file activity
- Behavioral detection that goes beyond known signatures
- Investigation timelines showing how an incident began and spread
- Device isolation, process termination, and forensic evidence collection
The limits matter as much as the features. EDR produces alerts that need skilled review. It can miss activity in identity, email, network, or cloud systems. And it does not come with a staffed response team.
Plenty of teams own capable endpoint tooling and still struggle to run it. DeepSeas regularly sees two- or three-person security teams expected to watch an endpoint console around the clock. Those teams still have to tune detections, chase false positives, and handle projects.
Where EDR fits
EDR works best as the foundation for an organization with an established security operations function, a named incident response team, and enough people to cover alerts day and night.
Typical fits are enterprises with mature SOCs or teams that want granular control over endpoint telemetry and response policies. Regulated organizations still need broader controls and documented processes beyond EDR.
What is MDR?
Managed detection and response (MDR) combines security technology with human-led monitoring, triage, investigation, threat hunting, and response support. Gartner defines it as remotely delivered SOC functions, with 24/7 staffing and active response beyond notification as mandatory features.
A typical workflow runs like this:
- Collect telemetry
- Correlate events
- Investigate suspicious activity
- Validate the threat
- Contain it, or guide containment
- Communicate findings and support remediation
The payoff is continuous coverage, a lighter alert burden, specialist expertise, wider visibility, and consistent incident documentation.
Scope varies widely by provider, so pin down these points before signing:
- Which data sources are monitored
- Whether the provider performs containment or only recommends it
- Escalation procedures
- Service-level commitments
- Response authority, and who grants it
Provider terms differ. Sophos, for example, offers modes ranging from preauthorized response to notify-only guidance, so "MDR" alone tells you little.
Where MDR fits
MDR suits mid-market organizations without a 24/7 SOC, growing companies without a full-time CISO, regulated businesses, and enterprises that want extra capacity beside an internal team.
Sectors with clear demand include:
- Healthcare
- Higher education and public sector
- Financial services
- Manufacturing and OT
- Cloud-heavy firms
- Distributed or BYOD workforces
Be careful with compliance claims. HHS requires administrative, physical, and technical safeguards for ePHI, but HHS guidance does not make EDR or MDR a compliance guarantee.
EDR vs MDR: What Is Better for Your Organization?
What matters is whether you can operate EDR effectively, and what monitoring and response you need.
Five factors to weigh
- Internal capability: headcount, analyst experience, after-hours coverage, tuning skills, and who has authority to isolate a device or disable an account at 2 a.m.
- Attack surface: identities, email, cloud workloads, network, OT, mobile, and third parties. Endpoint-only visibility can leave real gaps.
- Business and regulatory needs: customer security reviews, cyber insurance controls, audit evidence, uptime demands, and recurring reporting.
- Timing risk: Sophos found 88.10% of ransomware deployments happened outside business hours, so night and weekend coverage is not optional for many teams.
- Full operating cost: licensing, integration, training, alert handling, hunting, and the cost of a slow response.
On cost, BLS reports a median wage of $129,180 for information security analysts (May 2025). That is one salary, not a loaded cost. Round-the-clock coverage takes several people, so compare that total against an MDR quote before deciding.
Choose EDR when
- Your team already has strong internal security capability
- You want direct control over endpoint telemetry and response policies
- Requirements stay contained and endpoint-focused
- You can staff monitoring and response around the clock
EDR can also suit a team still building its program, provided there is a realistic plan for alert ownership, playbooks, and after-hours coverage.
Choose MDR when
- You lack a 24/7 SOC or struggle to hire
- Alert fatigue is wearing down your team
- Hunting and investigation expertise is missing in-house
- Your environment is complex or distributed
- Documented monitoring and response support is required
Use this checklist when comparing providers:
- Telemetry sources and integrations
- Analyst qualifications
- Response actions and approval model
- Escalation paths and SLAs
- Data ownership and retention
- Reporting and onboarding
- Support for the tools you already own
DeepSeas is one example of an MDR and complete cyber defense provider. It offers 24/7 monitoring and response through its CyberFusion SOC, with customizable services and bring-your-own-stack support for existing EDR, SIEM, and CNAPP tools.
Its Endpoint MDR works inside the endpoint platform you already run, with client-set limits on what analysts may do. Coverage can expand into cloud, identity, email, or OT without re-onboarding. DeepSeas also says it never auto-isolates a production line or medical device, a point that matters in manufacturing and healthcare.
Consider using both EDR and MDR
Keep EDR for granular endpoint control, and let MDR analysts handle continuous monitoring, hunting, investigation, and coordinated response. SANS documents MDR providers working through customers' existing EDR consoles.
Define roles up front to avoid duplicate alerts, conflicting containment actions, and unclear escalation. Settle who approves isolation, who communicates with leadership, and who owns remediation.
XDR is a separate layer. It is a technology approach that correlates telemetry across endpoints, email, identity, and cloud. EDR is the endpoint layer, XDR the broader technology, and MDR the managed service that operates them.
Real-World Examples
Published cases show how the models play out. Vendor-reported results are not independent benchmarks.
Norwich University had three staff and a CIO, plus unreliable overnight alerting and cost-limited log ingestion. Its previous MDR did not close those gaps.
After moving to Rapid7's MDR, one malware event was detected within 10 minutes, an analyst called five minutes later, and the system was quarantined before university staff logged in. The lesson: an "MDR" label does not guarantee real after-hours service.
Ball State University wanted to extend SOC hours to 24/7/365. It kept its infosec team, added Pondurance MDR, and later layered in log monitoring and SentinelOne EDR. Coverage grew; no detection-time figures were published.
Enloe Medical Center faced staff turnover and heavy research workload after a ransomware event. It adopted Cortex XDR with Unit 42 MDR, so the provider monitors continuously while the internal team focuses on strategic work.
The common thread: each organization kept internal ownership and bought coverage it could not staff. If that sounds like your situation, DeepSeas can help you assess whether its MDR and broader cyber defense capabilities fit your staffing, technology, and coverage needs.
Conclusion
EDR is the endpoint-focused technology. MDR is the expert-run service that monitors and responds. Your choice depends on internal capability, coverage requirements, attack-surface complexity, and risk tolerance.
You also do not have to pick one. A well-defined combination gives you granular endpoint control with continuous monitoring behind it. Before you buy, ask about outcomes, ownership, integrations, and provider accountability.
Frequently Asked Questions
Is MDR better than EDR?
Neither is universally better. EDR fits organizations with strong internal security operations. MDR fits those needing outsourced expertise, 24/7 monitoring, and broader response support.
What are the key differences between EDR and MDR?
EDR is endpoint security technology. MDR is a managed service that supplies human monitoring, investigation, threat hunting, and response.
What is MDR vs XDR vs EDR?
EDR focuses on endpoints. XDR correlates signals across multiple security domains. MDR provides the people and operational service that monitor and respond to threats.
What is the difference between EDR and antivirus?
Antivirus traditionally emphasizes detecting and blocking known malware, though modern products also watch behavior. EDR adds continuous telemetry, investigation, and response tools.
Can you use EDR and MDR together?
Yes. MDR commonly runs on an EDR telemetry layer, so you keep endpoint visibility while outsourcing monitoring, hunting, and response.
Does MDR replace an internal security team?
No. MDR reduces monitoring and response workload, but you still own governance, risk decisions, access management, business continuity, and security strategy.
