Managed Detection and Response gives organisations a fully staffed, around-the-clock security operations capability as a service, while an in-house Security Operations Centre (SOC) means building and operating that capability internally. For most Australian mid-sized organisations, MDR delivers 24/7 monitoring, specialist expertise and faster deployment at a significantly lower total cost than building an internal SOC from scratch.
What Is Managed Detection and Response, and What Does an In-House SOC Involve?
Every organisation needs the ability to detect, investigate and respond to cyber threats. The question is not whether those capabilities are necessary, but how they should be delivered.
Many large enterprises operate an internal Security Operations Centre (SOC), employing analysts, engineers and incident responders who continuously monitor security events and respond to suspicious activity.
For most organisations, however, building that capability internally is neither practical nor cost effective.
This is where Managed Detection and Response provides an alternative.
MDR combines technology, threat intelligence and experienced security analysts into a managed service that continuously monitors an organisation’s environment, investigates alerts and responds to confirmed threats before they become business-disrupting incidents. Rather than simply generating alerts, MDR providers actively validate suspicious activity, investigate incidents and assist with containment.
An in-house SOC performs many of the same functions, but the organisation is responsible for recruiting staff, operating monitoring platforms, maintaining tooling, managing analyst workloads and ensuring continuous coverage.
The decision ultimately comes down to business requirements, available resources and long-term security strategy.
The Real Cost of Building a Security Operations Centre
Building a SOC involves considerably more than purchasing a Security Information and Event Management (SIEM) platform.
Maintaining continuous operations requires people, processes and technology working together every hour of every day.
An organisation operating a genuine 24/7 SOC typically needs:
- Multiple security analysts across rotating shifts.
- Senior incident responders.
- Threat hunters.
- Detection engineers.
- SIEM administrators.
- Security tooling and licensing.
- Threat intelligence subscriptions.
- Ongoing analyst training.
- Documented incident response processes.
Even before technology costs are considered, staffing alone represents a substantial investment.
Recruitment also presents challenges.
Australia continues to experience a shortage of experienced cyber security professionals, making it difficult for many organisations to recruit and retain skilled analysts. Competition for experienced SOC staff remains high, particularly among government agencies, critical infrastructure operators and large enterprises.
For many mid-sized organisations, maintaining this capability internally is difficult to justify when security events may require specialist expertise only occasionally.
This is one reason many organisations choose outsourced security monitoring rather than attempting to build an internal SOC from the ground up.
Coverage and Response Speed Matter
Cyber attacks do not follow business hours.
Ransomware operators, financially motivated cyber criminals and state-sponsored threat groups routinely launch attacks overnight, during weekends and on public holidays.
An effective SOC therefore requires genuine 24-hour coverage.
MDR services are specifically designed to provide continuous monitoring without requiring organisations to recruit and manage multiple shift teams themselves.
Modern MDR capabilities typically include:
- Continuous security monitoring.
- Threat hunting.
- Investigation of suspicious activity.
- Threat intelligence integration.
- Incident triage.
- Response guidance.
- Escalation of confirmed incidents.
The objective is to reduce attacker dwell time by identifying malicious activity before attackers achieve their objectives.
Organisations relying solely on business-hours monitoring may not discover an incident until many hours after initial compromise.
Continuous monitoring significantly reduces that window and improves the likelihood of containing threats before widespread damage occurs.
Skills, Burnout and the Cyber Security Talent Shortage
Technology alone does not operate a successful Security Operations Centre.
People remain the most important component, and they are often the hardest to find.
Australia continues to experience strong demand for experienced cyber security professionals, particularly SOC analysts, detection engineers and incident responders. Recruiting qualified staff is only the beginning. Organisations must also invest in ongoing training, career development and retention to keep pace with rapidly evolving threats.
Operating a SOC can also contribute to analyst fatigue.
Security teams process thousands of alerts every day, many of which turn out to be false positives or low-risk events. Over time, repetitive investigations, overnight shifts and constant exposure to security incidents can contribute to burnout, increasing the likelihood that important alerts are overlooked.
Managed Detection and Response providers address this challenge by distributing workloads across larger teams with dedicated expertise in threat hunting, detection engineering, malware analysis and incident response. This broader resource pool enables continuous monitoring while reducing the operational pressure that many internal teams experience.
For organisations with small internal security teams, MDR can complement existing capabilities rather than replacing them. Internal staff remain focused on business priorities while external analysts provide around-the-clock monitoring and incident investigation.
When Does an In-House SOC Make Sense?
An in-house SOC is still the right choice for some organisations.
Large enterprises with mature cyber security programmes, dedicated security leadership and substantial investment capacity often benefit from maintaining internal monitoring and response functions. Organisations operating highly sensitive environments or those with strict sovereignty, regulatory or operational requirements may also prefer to retain complete control over security operations.
Examples include:
- Large financial institutions.
- Defence organisations.
- National critical infrastructure operators.
- Government agencies with specialised security requirements.
- Global enterprises operating extensive internal security teams.
These organisations often require customised detection engineering, highly specialised operational procedures and close integration between cyber security, fraud, physical security and business operations.
However, building an internal SOC should be viewed as a long-term strategic investment rather than simply another IT project.
Success depends on sustained funding, executive commitment and continuous investment in people, technology and processes.
A Hybrid Model: The Best of Both Worlds
For many Australian organisations, the decision is not necessarily MDR or an internal SOC.
A hybrid approach often provides the greatest value.
Internal security teams retain ownership of governance, business priorities and strategic decision-making, while an MDR provider delivers continuous monitoring, threat hunting and specialist incident response capabilities.
This model allows organisations to benefit from:
- 24/7 monitoring without staffing overnight shifts.
- Access to experienced security analysts.
- Faster investigation of suspicious activity.
- Reduced recruitment pressure.
- Improved incident response capability.
- Greater scalability as the organisation grows.
Some organisations also integrate MDR with their existing Security Operations Centre Monitoring capability, allowing internal teams and external analysts to work together using shared visibility and coordinated response procedures.
Rather than replacing internal expertise, MDR strengthens the organisation’s overall cyber resilience by extending security operations beyond normal business hours.
Ultimately, the right approach depends on organisational size, cyber maturity, available resources and risk appetite.
Frequently Asked Questions
What is Managed Detection and Response?
Managed Detection and Response (MDR) is a cyber security service that provides continuous monitoring, threat detection, investigation and incident response through a dedicated team of security specialists. MDR combines advanced detection technologies with human expertise to identify and respond to threats before they significantly impact the organisation.
Is MDR cheaper than building a SOC?
In most cases, yes. Building an internal SOC requires significant investment in recruitment, 24/7 staffing, monitoring platforms, threat intelligence, ongoing training and operational management. MDR provides access to similar capabilities through a managed service, making it a more cost-effective option for many small and medium-sized organisations.
Can MDR support compliance requirements?
Yes. Many MDR services support compliance by providing continuous monitoring, centralised logging, incident investigation and evidence that can assist organisations meeting requirements under frameworks such as the ACSC Essential Eight, ISO/IEC 27001 and APRA CPS 234. Organisations should ensure their chosen provider aligns with their specific regulatory obligations.
When should a business build its own SOC?
An in-house SOC is generally appropriate for very large organisations with dedicated cyber security teams, substantial budgets and specialised operational requirements. Organisations subject to strict sovereignty obligations or requiring highly customised security operations may also benefit from maintaining an internal SOC.
How Intrix Can Help
Every organisation needs the ability to detect and respond to cyber threats, but not every organisation needs to build a Security Operations Centre from the ground up.
Intrix’s Managed Detection and Response service provides continuous monitoring, threat detection, investigation and response delivered by experienced cyber security specialists. Our team helps organisations reduce attacker dwell time, validate suspicious activity and respond quickly to emerging threats without the complexity and cost of operating a 24/7 internal SOC.
For organisations seeking additional visibility across their environments, Intrix also provides Security Operations Centre Monitoring, enabling businesses to strengthen monitoring capabilities while supporting internal security teams. Whether you choose a fully managed service or a hybrid operating model, Intrix helps organisations improve cyber resilience with scalable security operations tailored to their business needs.
