MDR vs. SOC: What’s the difference and which should you choose?

When security teams ask about MDR vs. SOC, they’re usually asking the wrong question. MDR and a SOC aren’t competing products. A SOC is the function: the team, technology and processes responsible for monitoring and responding to threats. MDR is one way to deliver that function, without building it yourself.

The more useful question is whether to build your security operations capability in-house, or get it through a managed service. That choice has real consequences for cost, speed of coverage and the quality of protection your organization actually gets.

Kaseya offers MDR services purpose-built for MSPs and lean IT teams, which gives us a direct view of how these two models play out across hundreds of managed environments.

What’s the difference between MDR and a SOC?

The simplest framing: MDR is what you buy. A SOC is what you’re trying to run. MDR is one model for delivering SOC capability, specifically the outsourced model. When you engage an MDR provider, you’re getting access to their SOC without building one yourself.

That single distinction clarifies the comparison. The real decision isn’t MDR versus a SOC. It’s whether to run SOC operations in-house or to get them through a managed service.

Managed detection and response (MDR)

MDR is an outsourced security service where a third-party provider monitors your environment, investigates alerts, hunts for threats and responds to confirmed incidents on your behalf, around the clock. MDR providers operate their own SOC and apply their analysts, technology and threat intelligence to your environment under a subscription model.

The defining characteristic is active response. MDR providers don’t just monitor and notify. When an attacker is detected moving laterally through an environment, the MDR team takes containment action, including isolating affected devices, blocking malicious connections and documenting the incident, before your internal team has to do anything. Speed of containment is the core value proposition.

Most MDR services monitor a broader attack surface than endpoint tools alone. They typically ingest telemetry from endpoints, Microsoft 365 and cloud applications, firewalls and identity systems, correlating signals across those sources to surface multi-stage attacks that no single tool would catch on its own.

For a deeper look at how MDR works and what to look for in a provider, see our guide to managed detection and response.

Security operations center (SOC)

A security operations center is a centralized team, supported by technology and defined processes, that monitors an organization’s environment for threats around the clock. SOC analysts review alerts, investigate suspicious activity, triage incidents and coordinate response. The SOC is where the day-to-day work of defending an organization happens.

SOCs come in several forms. An in-house SOC is fully staffed and operated by the organization itself. An outsourced or virtual SOC hands those operations to a third-party provider. A hybrid or co-managed SOC splits responsibilities between an internal team and an outside service. The model varies, but the function is the same: continuous monitoring and response.

For a full breakdown of what a SOC does and how it’s structured, see our guide to what is a security operations center.

MDR vs. SOC: Key differences

The differences between MDR and an in-house SOC come down to ownership, cost and time to coverage. Here’s how the two models compare across the dimensions that matter most.

SOC-as-a-Service (SOCaaS): The middle ground between MDR and SOC

SOC-as-a-Service (SOCaaS) sits between these two models. Like MDR, it’s an outsourced, subscription-based way to get SOC capability without building it yourself. The distinction is scope: SOCaaS tends to cover a broader set of security operations functions including compliance reporting, log management and infrastructure oversight, while MDR is focused specifically on threat detection, hunting, and active response. For organizations evaluating all three options, the choice often comes down to how much operational breadth you need versus how quickly you need active response coverage. For a deeper look at how SOCaaS works, see our guide to SOC as a Service.

Where an in-house SOC makes sense

Building your own SOC makes sense when specific conditions are in place.

Full control and customization
An in-house SOC gives your team direct ownership of every detection rule, every tool, and every process. For organizations with strict data sovereignty requirements, classified environments, or highly specialized infrastructure, that level of control is genuinely necessary. You define what gets monitored, how alerts are handled, and who has access to what.

Institutional knowledge
Internal analysts develop deep familiarity with your specific environment over time. They know what normal looks like, which systems are sensitive, and how your business operates. That institutional context is difficult for an outside provider to replicate fully, particularly in complex or unique environments.

Regulatory and compliance requirements
Some industries and jurisdictions require that security monitoring functions remain under direct organizational control. If your compliance framework mandates it, in-house is not optional.

Existing security maturity
Organizations that have already invested in security tooling, have a capable internal team, and simply need to formalize operations are natural candidates for an in-house SOC. The build is incremental rather than from scratch, and the team already exists.

The real cost of building a SOC in-house

The economics of an in-house SOC are what drive most organizations toward MDR. True 24/7 coverage requires shift rotation across weekends, holidays, and sick days. The realistic minimum is 8 to 12 analysts to sustain that coverage without burning out the team.

According to Expel’s published cost analysis, building a competent 24/7 SOC typically costs well over $1 million annually just to reach a functional baseline, with advanced operations easily exceeding $2 to 3 million per year. Analyst salaries alone, at roughly $98,000 per year for entry-level hires, account for $1.6 to $2.1 million at minimum staffing before benefits and overhead. Add SIEM platform costs, EDR licensing, threat intelligence feeds and infrastructure, and the total climbs quickly.

Then there’s the time problem. Standing up a SOC from scratch takes 6 to 18 months of hiring, tooling, and configuration before it reaches full operational capability. During that window, the environment is exposed.

How MDR delivers SOC capability more efficiently

For most organizations, particularly SMBs and the MSPs serving them, MDR delivers better security outcomes faster and at lower cost than building in-house.

Immediate coverage
MDR onboards in days. There’s no hiring cycle, no tooling procurement, no configuration backlog. Your environment is under active monitoring from the moment deployment is complete. For organizations currently unprotected, that speed is not a convenience feature. It’s the difference between covered and exposed.

Access to analyst depth
MDR providers staff and develop their analysts at scale, exposing them to threat patterns across hundreds of client environments simultaneously. That breadth of exposure is difficult to replicate in a single-organization SOC. A mid-sized company competing in the same hiring market for the same analysts will typically lose to providers who can offer broader career development and more diverse incident experience.

Proactive threat hunting
Most SMB and mid-market in-house SOCs don’t have dedicated threat hunters. The day-to-day alert queue consumes available capacity. MDR services include proactive hunting as part of the service contract, with analysts actively searching for attacker behavior that hasn’t yet triggered an automated rule. For slow-moving attacks and advanced persistent threats, hunting is often the only way to find them before they cause damage.

Predictable cost structure
MDR converts what would otherwise be a large, variable capital expense into a predictable operational subscription. For MSPs in particular, that cost predictability maps cleanly to per-client pricing and monthly recurring revenue models.

The MSP case specifically
MSPs face a compounded version of this problem. They need to deliver security operations coverage across dozens of client environments simultaneously, not just their own. Building a SOC capable of covering an entire client base would require analyst headcount and infrastructure that most MSPs can’t justify. MDR gives MSPs access to a provider’s SOC as the delivery mechanism, enabling them to offer 24/7 threat coverage to clients without staffing a security operations team from scratch. According to the Kaseya 2026 State of the MSP Report, 71% of MSPs report year-over-year revenue growth in cybersecurity services. MDR is a direct enabler of that growth for providers that don’t have internal SOC capacity.

Can MDR and an in-house SOC work together?

Yes, and many mature organizations use both. The most common pattern is a hybrid model where an in-house team handles specific functions, specialized environments, or oversight, while MDR covers the broad 24/7 monitoring and response workload.

This makes sense in several scenarios. A company with a small internal security team might use MDR for overnight and weekend coverage while their own analysts handle daytime investigations and strategic work. An organization with a proprietary industrial control system might keep that monitoring in-house while using MDR for standard IT environments. An MSP might use MDR as the SOC backbone for client environments while keeping internal tooling focused on service delivery.

The hybrid model is also a natural growth path. Organizations that start with MDR and develop internal security maturity over time can progressively bring more SOC functions in-house as budget and headcount allow, without ever having a gap in coverage.

MDR vs. SOC: How to make the right choice

The right model depends on where your organization sits today in terms of budget, team capacity, and security maturity.

An in-house SOC is the right choice if:

• You have the budget for 8 to 12 dedicated analysts plus tooling and infrastructure
• Your compliance framework or data sovereignty requirements mandate internal control of security operations
• You operate specialized or classified environments that external providers can’t cover
• You have existing security team capacity and are formalizing an already-functional operation

MDR is the right choice if:

• You need 24/7 coverage now and can’t wait 6 to 18 months to build it
• Your team lacks dedicated security analysts or threat-hunting capabilities
• You’re an MSP that needs to deliver SOC-level protection across client environments without building internal headcount
• Cost predictability matters and the capital expense of a full SOC build isn’t justified

SOCaaS is worth considering if:

• You need outsourced SOC coverage but also want broader security operations functions such as compliance reporting and log management
• You’re looking for a managed model with more operational breadth than a focused MDR service provides

A hybrid approach makes sense if:

• You have a small internal security team and need to extend their coverage hours
• You want to keep specialized or sensitive environments under direct control while outsourcing general monitoring
• You’re growing toward an in-house SOC and need coverage during the build-out period

Get 24/7 SOC coverage with Kaseya MDR

For most SMBs and the MSPs that serve them, the practical path to SOC capability is MDR. Building a 24/7 security operations function from scratch takes time, budget and analyst talent that most organizations don’t have sitting idle. MDR closes that gap immediately, with the provider’s team acting as your SOC from day one.

Kaseya MDR delivers 24/7 SOC-backed monitoring across endpoints, Microsoft 365 and firewalls, with AI-driven triage to cut through alert noise, automated containment for fast-moving threats like ransomware and direct PSA integration so your team gets actionable tickets rather than raw alerts. No internal analyst headcount required.