A Security Operations Centre (SOC) is essential for detecting and responding to cyber threats. But should you build one in-house or partner with a managed security provider? This guide helps you evaluate both options.
What Does a SOC Do?
A SOC provides centralised security monitoring, detection, and response capabilities. Core functions include:
- 24/7 security monitoring and alerting
- Threat detection and analysis
- Incident investigation and response
- Threat hunting and intelligence
- Security tool management and tuning
- Compliance monitoring and reporting
Option 1: Building an In-House SOC
Advantages
- Complete control over operations
- Deep knowledge of your environment
- Customised to your specific needs
- Direct access to analysts
- No data sharing with third parties
Challenges
- High upfront and ongoing costs
- Difficult to recruit and retain talent
- Limited threat intelligence scope
- Time to become fully operational
- 24/7 staffing requirements
Cost Considerations
Building an in-house SOC requires significant investment:
Estimated Annual In-House SOC Costs (UK)
Option 2: Managed SOC Services
Advantages
- Lower and predictable costs
- Immediate access to expertise
- Broader threat intelligence
- No recruitment challenges
- Proven processes and tools
Challenges
- Less direct control
- Shared analyst attention
- Data leaves your environment
- Dependent on provider quality
- May require customisation
Choosing a Managed SOC Provider
Not all managed SOC providers are equal. Key evaluation criteria include:
- Detection capabilities: What technologies do they use? How do they handle false positives?
- Response procedures: What happens when they detect a threat? Can they take action in your environment?
- Communication: How will you be notified? What's the escalation process?
- Integration: Can they work with your existing tools and processes?
- Compliance: Do they meet your regulatory requirements (ISO 27001, SOC 2)?
- SLAs: What are their guaranteed response times?
CASIX SOC Services
Our ISO 27001 certified SOC provides 24/7 monitoring, detection, and response. With average response times under 15 minutes and dedicated analyst teams, we provide enterprise-grade security without the enterprise cost.
The Hybrid Approach
Many organisations find success with a hybrid model, maintaining some in-house security capability while leveraging managed services for 24/7 monitoring. This provides:
- Internal security team focused on strategic initiatives
- Managed provider handling routine monitoring and Tier 1 response
- Escalation path to in-house experts for complex incidents
- Cost savings compared to full in-house 24/7 coverage
- Retained institutional knowledge and control
Making the Decision
| Factor | In-House | Managed |
|---|---|---|
| Budget under £500k/year | ||
| Need 24/7 coverage immediately | ||
| Highly regulated industry | ||
| Complex, unique environment | ||
| Limited IT/security staff |
Conclusion
There's no one-size-fits-all answer. The right choice depends on your organisation's size, budget, risk profile, and existing capabilities. For most mid-sized organisations, managed SOC services offer the best balance of capability and cost, while larger enterprises may benefit from hybrid models that leverage both internal teams and external expertise.