Managed EDR explained
Managed EDR for teams without a SOC
Endpoint detection and response (EDR) records what happens on your laptops and servers and can stop an attack in progress. It only protects you if someone is watching when it raises an alert. This guide covers what a managed EDR service adds, the attacks EDR cannot see, and how to decide whether your organisation needs more.
For IT and security leads · Reviewed September 2026
The four pillars of EDR.
EDR is an agent installed on the devices you manage: laptops, desktops, servers and, on most platforms, mobiles running Windows, macOS, Linux, iOS or Android. It watches activity continuously and gives an analyst the tools to act when something looks wrong. Microsoft Defender for Endpoint, SentinelOne and CrowdStrike Falcon are common examples.
Records
Keeps a detailed log of processes, files, network connections and user activity on each device with an agent installed, so there is evidence to investigate.
Detects
Flags behaviour that matches known attack techniques, such as credential dumping or ransomware encrypting files, even when the malware itself is new.
Contains
Lets an analyst isolate a device from the network, stop a process or remove a file within seconds, from anywhere.
Investigates
Rebuilds the sequence of events on a device, so you can see how an attacker got in and what they touched.
What a managed EDR service includes.
The tool raises alerts. A managed service supplies the people who decide what those alerts mean and act on them, day and night. Most providers cover the same core work.
-
01
24/7 monitoring
Analysts watch the EDR console around the clock, including weekends and holidays, when most attacks begin.
-
02
Tuning
The provider adjusts detection rules to your environment, so real threats are not buried under routine alerts.
-
03
Triage and investigation
Each alert is checked, given context and either closed or escalated, with the reasoning recorded.
-
04
Containment
Agreed actions, such as isolating a device, are taken on your behalf under rules of engagement set during onboarding.
-
05
Reporting
Regular summaries of what was detected, what was done and where coverage is missing.
Service levels vary between providers. Ask how quickly alerts are triaged, who is allowed to isolate a device, and what happens outside UK working hours.
The limits of EDR
Within its scope, EDR is the strongest control most organisations have on their devices. It sees what happens wherever its agent runs. The question is what sits outside that scope, because many attacks never touch a managed device.
Stolen log-ins
An attacker using a phished password signs straight into Microsoft 365 or a SaaS app. No laptop is involved, so EDR has nothing to detect.
Cloud and SaaS
Changes to Azure, AWS, Google Workspace or finance platforms happen outside the endpoint, in services EDR does not monitor.
Email fraud
Business email compromise and invoice fraud run through mailboxes and payment processes, not through malware on a device.
Suppliers
A compromised supplier with remote access arrives through their own systems and accounts, which your EDR does not cover.
Devices without an agent
Personal phones and laptops, contractor machines, network equipment and servers missed during rollout sit outside its view.
The decision to act
An alert at 3am still needs someone with the authority to isolate a critical server. The tool cannot make that call.
EDR, XDR, MDR and managed SOC.
The terms overlap, and providers sometimes use them interchangeably. This is how each compares to the other.
| Managed EDR | Managed XDR | MDR | Managed SOC | |
|---|---|---|---|---|
| What is watched | Endpoints with the agent installed | Endpoints plus identity, email, cloud and network data, correlated in one platform | Endpoints, identity, cloud and email, depending on the provider | Your whole estate, including logs from business systems and suppliers |
| Who acts | Provider triages; your team usually contains | Provider investigates; containment varies | Provider investigates and contains | Provider investigates, contains and coordinates the response |
| Beyond detection | Little | Automation and threat intelligence | Threat hunting and guidance | Threat intelligence, control testing, risk reporting and board assurance |
| Typical fit | Small, endpoint-heavy estates with an IT team on call | Organisations that own an XDR platform and want it run well | Most mid-sized organisations without a SOC | Regulated or complex organisations that need evidence of control |
Four questions to help you decide.
Managed EDR on its own suits some organisations. The answers to the below questions indicate whether yours is one of them.
- 1
Where does your business run?
Mostly on laptops and servers you manage, or mainly in Microsoft 365, cloud platforms and SaaS?
- 2
Who is responsible for out-of-hours monitoring?
Is there someone in-house who can be reached out of hours and has the authority to take a system offline?
- 3
Who can reach your systems?
Do suppliers, contractors or managed service providers have remote or privileged access?
- 4
Who needs evidence?
Do regulators, insurers, banks or clients expect proof of monitoring beyond your endpoints?
If most of your answers point to endpoints and an on-call team who can act, managed EDR may be enough for now. If your business runs largely in Microsoft 365, the cloud or through suppliers, you need detection that covers those too, and a provider with authority to respond.
Standalone, or as part of a wider service.
We manage your existing EDR, whether that is Microsoft Defender, SentinelOne, CrowdStrike or another platform. You keep the product you have. It can run as a standalone service, or as part of our Managed Detection and Response service and every tier of our managed SOC, where the same analysts also watch identity, cloud and email. Either way we work to rules of engagement agreed with you.
Questions about managed EDR.
Can Talanos manage our EDR on its own?
We can, but we rarely recommend it. Most organisations that ask for managed EDR also need someone watching identity, cloud and email, with the authority to act on what they find. That is why we mainly manage EDR as part of our Managed Detection and Response service.
Do you provide managed EDR for companies without a security operations team?
Yes. Our MDR service is designed for organisations without their own SOC. We monitor and respond around the clock, manage your EDR as part of that work, and keep your IT team informed and involved in decisions that affect the business.
Do we need to change our EDR product?
Usually not. We work with the major platforms, including Microsoft Defender for Endpoint, SentinelOne and CrowdStrike. If your current product leaves gaps, we will say so during onboarding.
What is the difference between EDR and antivirus?
Antivirus blocks known malicious files. EDR records behaviour across the device, detects attacks that use new or legitimate tools, and lets an analyst investigate and contain them.
What is the difference between EDR and EPP?
An endpoint protection platform (EPP) focuses on preventing attacks, with antivirus, firewall and device controls. EDR focuses on detecting and responding to attacks that get past those defences. Most modern products combine the two.
How is managed EDR different from MDR?
Managed EDR covers endpoints. Managed detection and response (MDR) covers endpoints as well as identity, cloud and email, and the provider usually has authority to contain incidents on your behalf.
What does managed EDR cost?
It depends on the number of devices, the data involved and how much of the response the provider handles. Our guide to SOC outsourcing costs explains how providers price these services.
Not sure what level of cover you need?
A 30-minute call is usually enough to tell whether managed EDR, MDR or a managed SOC fits your organisation. No preparation needed.
Book a discovery call