What Is MDR? Managed Detection and Response vs Traditional SIEM

Hero Summary

Managed Detection and Response (MDR) is a security service model that combines monitoring technology with a live analyst team who detect and respond to threats on an organization's behalf, rather than leaving detection tooling for an internal team to watch and operate alone. This guide explains what MDR is, how it generally differs from a traditional SIEM, and how Threat ResQ's SOC+ platform approaches detection and response.

Executive Summary

Most organizations don't lack security tooling — they lack the staffing to watch it around the clock and act on what it finds. MDR addresses that gap by pairing detection technology with a managed analyst team responsible for triage and response, rather than shipping an organization a dashboard and leaving the watching to them. This guide covers the general MDR concept, how it's commonly compared to a traditional SIEM, and how SOC+, Threat ResQ's managed detection and response platform, is positioned.

What is MDR? {#what-is-mdr}

Managed Detection and Response (MDR) is a security service that combines monitoring technology with a managed analyst team responsible for detecting, investigating, and responding to threats — as an ongoing service, rather than software an organization buys and staffs itself. The defining characteristic of MDR is the "managed" part: an outside team, not just the internal one, is directly responsible for watching alerts and acting on them.

How does MDR work? {#how-mdr-works}

At a conceptual level, MDR services generally operate on a loop: telemetry from an organization's systems is continuously collected, an analyst team (supported by detection tooling) reviews and correlates what that telemetry shows, and the team responds to confirmed threats — either directly, through predefined response actions, or by escalating to the customer's own team for anything that needs their sign-off.

Threat ResQ's SOC+ platform follows this same general shape, described specifically in its own published workflow: unified signal ingestion across endpoint, network, and identity telemetry; correlated triage that groups related alerts into one incident instead of scattering them across tools; analyst-led response, where 24x7 analysts action response playbooks with escalation to the customer's team for anything requiring sign-off; and evidence logging, where every incident and its resolution is recorded automatically as compliance evidence.

MDR vs traditional SIEM {#mdr-vs-siem}

A SIEM (Security Information and Event Management system) is the technology that collects and correlates security event data. MDR is a service model that includes technology but also the managed analyst team operating it. The two aren't strictly competing categories — an MDR service typically uses SIEM-like technology under the hood — but they differ in who's responsible for watching and acting on what the technology finds.

Threat ResQ's own published comparison, from the SOC+ FAQ, puts it this way: "A traditional SIEM only sees what you feed it — usually just network and endpoint telemetry. SOC+ also ingests signal from the rest of the Threat ResQ platform, so an external risk finding or a human-risk score change shows up in the same queue as a network alert, correlated, not siloed."

Dimension	Traditional SIEM (as generally used)	SOC+ (as published)
Primary purpose	Collects and correlates security event data for a team to review	Managed detection and response — technology plus a live analyst team
Signal sources	Typically network and endpoint telemetry	Endpoint, network, and identity telemetry, plus platform signal from DomainShield IQ and TRISA
Who reviews alerts	Usually the customer's own team	Threat ResQ's 24x7 analyst team, per SOC+'s published workflow
Response	Left to the customer to action	Analyst-led response playbooks, with escalation to the customer's team for anything requiring sign-off
Automation	Not automated by itself	Automated correlation and response playbooks handle volume; a live analyst team makes the response call, per SOC+'s own FAQ ("Is SOC+ fully automated?")

This table reflects only what's published about SOC+ and the general, widely-understood distinction between a SIEM and a managed service — it isn't a claim that every traditional SIEM lacks these capabilities, only that watching and acting on them is typically left to the customer's own team.

When might an organization consider MDR? {#when-to-consider}

Organizations generally consider MDR when they have security tooling in place but not the staffing to watch it continuously, or when building and staffing a round-the-clock internal SOC isn't practical. This is a general decision factor, not a guarantee of outcome for any specific organization — the right fit depends on an organization's own risk profile, existing team, and operational needs.

How Threat ResQ's SOC+ fits {#soc-plus-fit}

SOC+ is Threat ResQ's managed detection and response platform — 24x7 monitoring, correlated alerting, and analyst-led response, built on the same signal graph as the rest of the Threat ResQ platform rather than a siloed SIEM. It correlates findings from DomainShield IQ (external attack surface and impersonation alerts) and TRISA (readiness score drops indicating elevated human risk) into the same incident queue as endpoint and network alerts, and every incident and its resolution is logged automatically to getTRAC as compliance evidence. SOC+ is the current name for this product; earlier planning materials referred to it as ResQ Ops — the platform and roadmap are unchanged, only the name.

FAQ {#faq}

Is MDR the same as a SIEM? No. A SIEM is the underlying technology that collects and correlates security event data. MDR is a service model — it typically includes SIEM-like technology, but adds a managed analyst team responsible for watching and acting on what that technology finds.

Is SOC+ fully automated? No — automated correlation and response playbooks handle the volume, but a live analyst team makes the response call, especially for anything requiring escalation to the customer's team, per SOC+'s own published FAQ.

What was SOC+ previously called? SOC+ is the current name for this product. Earlier planning materials referred to it as ResQ Ops; the platform and roadmap are unchanged, only the name.