Every business needs cybersecurity. The question is whether you build that capability in-house or outsource it to a managed detection and response (MDR) provider. Both approaches have real strengths and real limitations — and the right answer depends on your budget, your risk profile, and the talent you can realistically attract and retain.

This guide breaks down the practical differences so you can make an informed choice.

What Is MDR?

Managed Detection and Response is a security service where an external provider monitors your environment 24/7, detects threats, investigates alerts, and responds to incidents on your behalf. MDR providers typically deploy their own technology stack (endpoint agents, SIEM, network sensors) alongside your existing tools and staff the operation with experienced security analysts.

What you get: Round-the-clock monitoring, threat detection, alert triage, incident investigation, and guided (or automated) response — without hiring a full security team.

MDR goes beyond traditional managed security services (MSSP) by including active threat hunting and hands-on response, not just alerting. When an MDR analyst sees something suspicious, they investigate it and tell you what happened, what’s affected, and what to do — rather than forwarding a raw alert for your team to figure out.

What Does In-House Security Look Like?

Building in-house security means hiring your own analysts, engineers, and potentially a CISO. You purchase and manage your own security tools — SIEM, EDR, vulnerability scanners, firewalls — and staff an internal security operations center (SOC) to monitor and respond to threats.

What you get: Full control over your security program, deep institutional knowledge, and the ability to tailor every aspect of your security posture to your specific environment.

The challenge is that building this capability is expensive and operationally demanding, especially for mid-sized businesses competing with enterprises for scarce security talent.

Cost Comparison

Cost is usually the most significant factor, and the gap between the two approaches is often larger than people expect.

In-House Security Costs

Building even a basic in-house security operation requires:

Security analysts (minimum 2-3 for business-hours coverage): $85,000–$130,000/year each
Security engineer/architect: $120,000–$180,000/year
SIEM platform licensing: $30,000–$150,000/year depending on data volume
EDR/endpoint protection: $15–$50/endpoint/year
Additional tools (vulnerability scanning, threat intel, SOAR): $20,000–$80,000/year
Training and certifications: $5,000–$15,000/year per analyst

For business-hours-only coverage with 3 analysts: $350,000–$700,000/year

For true 24/7 coverage (requires 6-8 analysts in rotation): $700,000–$1,500,000+/year

And that doesn’t include the cost of recruiting — cybersecurity has one of the tightest labor markets in technology. Average time-to-fill for security roles is 3-6 months, and annual turnover in SOC roles runs 20-30%.

MDR Costs

MDR pricing varies by provider and scope, but typical ranges:

Small business (50-200 endpoints): $3,000–$10,000/month
Mid-market (200-1,000 endpoints): $8,000–$25,000/month
Enterprise (1,000+ endpoints): $20,000–$60,000/month

Annual cost for a 500-endpoint organization: $96,000–$300,000/year — for 24/7 coverage with experienced analysts.

That’s roughly one-third to one-half the cost of building an in-house SOC, and you get 24/7 coverage from day one rather than spending months recruiting and ramping up a team.

Coverage and Response Time

The 24/7 Problem

Cyberattacks don’t follow business hours. Ransomware frequently deploys on Friday nights and holiday weekends precisely because attackers know most businesses have reduced monitoring during those windows.

Building true 24/7 in-house coverage requires a minimum of 6-8 analysts working in shifts, plus backups for vacation and sick time. For most mid-sized businesses, this is cost-prohibitive. The result is a gap: your security team works 8-5 Monday through Friday, and threats that arrive outside those hours go undetected until the next business day.

MDR providers operate 24/7/365 by default. Their SOCs are staffed around the clock with analysts who are actively monitoring your environment at 2 AM on a Saturday just as they are at 10 AM on a Tuesday.

Detection Quality

In-house teams have deep knowledge of your specific environment — they know your applications, your network topology, your normal patterns of behavior. This institutional knowledge is valuable for reducing false positives and understanding context around alerts.

MDR providers compensate with breadth of experience. A good MDR SOC monitors hundreds or thousands of customer environments and sees attack patterns across all of them. When a new technique appears at one customer, they can proactively hunt for it across their entire client base. This collective intelligence is something no individual in-house team can replicate.

Response Speed

MDR providers typically commit to response SLAs — mean time to detect (MTTD) under 15 minutes and mean time to respond (MTTR) under 30 minutes for critical threats. In-house teams may be faster during business hours when analysts are actively working, but significantly slower outside those hours.

Expertise and Talent

The Talent Shortage

There are an estimated 3.5 million unfilled cybersecurity positions globally. Security analysts, especially experienced ones, are expensive and hard to find. When you do hire them, they often leave within 18-24 months for higher-paying roles — SOC analyst burnout is a well-documented problem.

For mid-sized businesses, this creates a painful cycle: spend months recruiting, invest in training, then lose the analyst to a larger company offering 20% more salary.

MDR Expertise Advantage

MDR providers can attract and retain top security talent more effectively because:

Security is their core business, not a support function
Analysts work on diverse, challenging environments rather than monitoring one company’s network
Career progression paths are clearer within a security-focused organization
Providers invest heavily in training, certifications, and tooling

The analyst monitoring your environment at an MDR provider likely has more experience and better tools than someone you could hire at the same effective cost.

When In-House Makes Sense

Despite MDR’s advantages, building in-house security is the right choice in some scenarios:

Highly regulated industries where compliance frameworks require direct control over security operations (defense, classified government work, certain financial services)
Large enterprises with 5,000+ employees that can justify the cost of a full SOC and compete for talent
Organizations with unique environments that require deep, specialized knowledge (industrial control systems, proprietary protocols)
Companies with existing strong security teams that just need to fill specific gaps

When MDR Makes Sense

MDR is typically the better choice when:

You can’t staff 24/7 coverage — most businesses fall into this category
Security talent is hard to attract in your market or at your budget
You need coverage now — MDR deploys in weeks, not months
You want predictable costs — monthly subscription vs. headcount and tooling budgets
Your industry is a common target — retail, healthcare, professional services, manufacturing

The Hybrid Approach

Many organizations find the best answer is somewhere in the middle:

MDR for 24/7 monitoring and detection — let the provider handle the heavy lifting of continuous monitoring and initial response
In-house security lead or small team for strategy, compliance, vendor management, and internal security projects
Co-managed model where your internal team handles policy and governance while MDR handles operational security

This gives you the best of both worlds: the always-on coverage and expertise of MDR with the institutional knowledge and strategic control of an internal security function.

How PCG Can Help

Choosing the right cybersecurity model isn’t something you should decide based on a vendor pitch. We help you evaluate your actual risk profile, assess what you can realistically build in-house, and compare MDR providers objectively.

Our approach:

Security posture assessment to understand your current gaps and risks
Build-vs-buy analysis specific to your size, industry, and budget
MDR provider evaluation across leading platforms — we’re not tied to any single vendor
Implementation support to get your chosen solution deployed and tuned
Ongoing review to ensure your security program evolves with your business and the threat landscape

MDR vs In-House Security: Which Approach Protects Your Business Better?