MDR vs EDR: What’s the Difference?

July 29, 2026

In the process of evaluating your endpoint security, you’ve probably come across Endpoint Detection and Response (EDR) and Managed Detection and Response (MDR). If they sound similar, it’s because they are! But they’re not the same thing.  

There are several key things you need to keep in mind when deciding which approach best fits your organization.  

 

What is EDR?  

Endpoint Detection and Response (EDR) is a security technology that monitors endpoints, like laptops, desktops, servers, and mobile devices, to  

  • Continuously monitor endpoint behavior 
  • Detect malware and ransomware activity 
  • Alert on suspicious patterns  
  • Provide tools to isolate or remediate infected devices  

What EDR Does Well 

  • Real-time visibility into endpoint activity 
  • Advanced threat detection beyond traditional antivirus 
  • Forensic data for investigations 
  • Direct control for internal IT/security teams 

Where EDR Falls Short (Especially for Small Businesses) 

EDR is a tool, not a team. While it can generate alerts and surface threats (both useful tools!), it’s only as good as the people attending it. Someone still needs to monitor alerts 24/7, investigate incidents, determine if alerts are true threats, and then take immediate action and remediate. 

For SMBs with a limited workforce at their disposal, that’s the challenge. A dedicated security team or staff might not be available around the clock to act quickly, and that’s where MDR comes in.  

 

What is MDR?  

Managed Detection and Response (MDR) takes the EDR technology a step further by adding critical human expertise and active management. Instead of just receiving alerts, you get a team actively reviewing, validating, and responding to threats on your behalf.  

 

What MDR Typically Includes 

  • 247/7 threat monitoring 
  • Proactive threat hunting 
  • Alert triage and validation 
  • Immediate containment (device isolation, user lockout, etc.) 
  • Incident response guidance 
  • Reporting for compliance and audits 

 

In short: EDR gives you visibility, MDR gives you outcomes.  

 

When EDR Might Be Enough 

EDR alone might be appropriate if:  

  • You already have an internal security team 
  • You operate a 24/7 security operations center 
  • You have documented incident response procedures 
  • You can investigate and contain threats immediately 

For larger enterprises, this is common, but for small businesses it’s rare.  

 

How to Decide?  

If you’re still unsure whether EDR or MDR is right for you, here are a few questions to ask yourself:  

  1. Who is monitoring alerts after hours? 
  2. How quickly can we isolate a compromised device? 
  3. Do we have incident response playbooks? 
  4. Can we confidently distinguish false positives from real threats?  
  5. What would a ransomware incident cost our business? 

If the answers are unclear, then MDR is likely the safer path.  

The Bottom Line 

EDR is a tool. MDR is a service.  

For most small businesses, the question isn’t “Do we need EDR or MDR?”. It’s “Who is going to manage our security, and how quickly can they respond when something goes wrong?”.  

If your answer to that question is “I’m not sure,” we should talk.