Why choosing between SOC, MDR, and SIEM matters for your business
Every year, thousands of European small and medium businesses face a difficult decision: how to protect their digital infrastructure without overspending or underdelivering on security. According to the 2024 Clusit Report, cyberattacks targeting Italian businesses grew by 65% compared to the previous year, with SMBs bearing a disproportionate share of the damage.
The problem is not a lack of solutions. It is the opposite. Terms like SOC, MDR, and SIEM get thrown around in vendor pitches and trade publications, often interchangeably. For a business owner or IT manager at a company with 50 to 500 employees, understanding which investment actually fits your risk profile and budget can mean the difference between real protection and expensive shelfware.
This guide breaks down what each option does, what it costs, and which one makes sense depending on where your company stands today.
What SIEM, SOC, and MDR actually mean
Before comparing these three approaches, it helps to understand what each one does at a fundamental level. They are not interchangeable, even though they overlap in certain areas.
SIEM: the data engine
A Security Information and Event Management platform collects log data from across your IT environment — firewalls, servers, endpoints, cloud applications — and correlates events to detect potential threats. Think of it as a centralised dashboard that aggregates millions of signals and tries to surface the ones that matter.
Popular SIEM platforms include Splunk, Microsoft Sentinel, and IBM QRadar. They are powerful, but they are tools, not services. A SIEM does not respond to threats on its own. It generates alerts. Someone still needs to investigate those alerts, determine whether they represent real incidents, and take action.
For most SMBs, this is where the challenge begins. A mid-range SIEM deployment can generate hundreds or even thousands of alerts per day. Without trained analysts reviewing them, critical warnings get buried under noise. Industry data suggests that over 40% of security alerts go uninvestigated in organisations that rely solely on SIEM without dedicated staff.
SOC: the human layer
A Security Operations Centre is a team of cybersecurity analysts who monitor your environment around the clock. They are the people who sit behind the SIEM (or other monitoring tools), triage alerts, investigate incidents, and coordinate the response when something goes wrong.
Running an internal SOC is the gold standard for large enterprises. It offers full control, deep institutional knowledge, and the ability to tailor detection rules precisely to your environment. It is also extremely expensive.
Building a 24/7 SOC requires a minimum of five to six full-time analysts working in shifts, plus a team lead and incident response specialists. In Italy, fully burdened costs for a security analyst range from €45,000 to €70,000 annually. When you factor in tooling, training, and infrastructure, a functional in-house SOC easily exceeds €500,000 per year. For companies with fewer than 500 employees, this is rarely justifiable.
MDR: the managed middle ground
Managed Detection and Response is a service model where an external provider handles threat monitoring, detection, and response on your behalf. MDR vendors deploy their own technology stack (often including a SIEM or similar platform) and staff it with their own analysts. You get the outcome — continuous monitoring and rapid incident response — without building the capability in-house.
MDR has become the fastest-growing segment in cybersecurity services, particularly in Europe. Gartner projected that by 2025, 50% of organisations would be using MDR services, up from less than 5% in 2019. The appeal is straightforward: it delivers SOC-level protection at a fraction of the cost, typically ranging from €3,000 to €15,000 per month for an SMB, depending on the scope and number of endpoints covered.
How to choose the right approach for your company
The decision between SIEM, SOC, and MDR is not purely technical. It depends on your organisation’s size, internal capabilities, regulatory obligations, and budget.
When SIEM alone might work
If your company already employs at least one or two experienced security professionals who can dedicate time to alert triage and investigation, a standalone SIEM can be a cost-effective foundation. This scenario is common in mid-sized companies with mature IT departments that need better visibility but already have the human resources to act on findings.
Keep in mind that under NIS2 — the EU directive that took effect in October 2024 — many Italian businesses now face mandatory incident reporting obligations within 24 hours. A SIEM without adequate staffing will not help you meet that deadline.
When MDR is the smart investment
For most Italian SMBs, MDR represents the best balance of protection, cost, and compliance readiness. It is particularly well-suited if your company has fewer than five people in the IT department, operates in a sector covered by NIS2 or GDPR enforcement priorities, needs 24/7 monitoring but cannot justify hiring night-shift analysts, or wants predictable monthly costs rather than a large capital expenditure.
MDR providers that operate within the EU also help address data residency concerns, an increasingly important factor as the Italian Garante per la Protezione dei Dati Personali continues to scrutinise cross-border data transfers.
When a full SOC makes sense
An internal SOC becomes viable — and sometimes necessary — when your company processes highly sensitive data at scale, operates critical infrastructure, or has regulatory requirements that demand direct oversight of security operations. Financial institutions, healthcare providers, and energy companies with more than 500 employees often fall into this category.
Some organisations take a hybrid approach: they deploy an internal SOC during business hours and use an MDR provider for nights, weekends, and holiday coverage. This model reduces costs while maintaining internal expertise and control.
The real cost of doing nothing
The most expensive cybersecurity strategy is the one you never implement. IBM’s 2024 Cost of a Data Breach Report found that the average breach cost for organisations with fewer than 500 employees reached €2.98 million globally. In Italy, regulatory fines under GDPR can add up to 4% of annual turnover on top of direct damages.
Beyond the financial impact, there is the operational disruption. Ransomware attacks against Italian SMBs in 2024 caused an average of 23 days of downtime, according to data from the Italian National Cybersecurity Agency (ACN). For many businesses, three weeks of reduced operations is an existential threat.
A practical decision framework
Rather than chasing the most sophisticated solution, start with three questions. First, how many people on your team can realistically dedicate time to security monitoring every day? If the answer is zero or one, MDR is almost certainly your starting point. Second, what compliance obligations apply to your business under NIS2, GDPR, or sector-specific regulations? These requirements often dictate minimum monitoring and response capabilities. Third, what is your realistic annual budget for cybersecurity operations, not including existing tools and licences?
Map your answers against the options. A SIEM without staff is a dashboard nobody watches. A SOC without budget is a plan that never materialises. MDR without due diligence on the provider is trust without verification. The right investment is the one your organisation can actually sustain and operate effectively, month after month.
Need support on this topic? Contact us for a free consultation — let’s assess your company’s situation together.
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