Cybersecurity / Managed Cyber Security

MDR is a service. A SOC is a capability. The real variable is how much operational depth sits behind that service.

Both approaches provide 24/7 threat monitoring, alert triage and incident response. The question is which delivery model makes sense for the organisation's scale, budget and operational context.

Start with what each term actually covers
Short answer

For most Australian organisations, MDR delivers the practical detection and response coverage they need without the cost and delay of building the function internally. An internal SOC can be the right model for large, complex or highly regulated organisations with the scale to justify permanent internal staffing and deeper platform customisation. The more useful question for most buyers is not SOC versus MDR. It is what depth of MDR is right — a streamlined detection and response model, or a SOC-backed operating tier behind the service.

What each is

A service, a capability, and the depth between them.

MDR and a SOC can deliver the same operational outcomes. The question most buyers actually need to answer is not which category to choose. It is what depth of service the environment requires.

  • SOC (Security Operations Centre) — A capability: the people, processes, tooling and workflows used to monitor, investigate and respond to threats. It can be built internally, delivered by a managed SOC provider, or structured as a hybrid. The label describes the function, not the delivery model.
  • MDR (Managed Detection and Response) — An outcome-oriented managed service focused on detection and active response. MDR can be delivered as a streamlined detection-and-response model (continuous monitoring, triage and guided containment) or with a full SOC behind it as a SOC-backed operating tier, providing deeper investigation, stronger after-hours coverage and more developed operational oversight. The depth varies by provider and by the complexity of the client environment.

The more useful comparison is not SOC versus MDR. It is what depth of MDR is right. Does the environment need a streamlined detection and response model, or does it need a SOC-backed operating tier behind the service? That distinction is more useful than the category name on the contract.

Understanding SOC delivery models. A SOC can be internal (the organisation builds and staffs it), managed (a provider operates it as a service), or hybrid (internal team plus external coverage). MDR sits within the managed model, but specifically focuses on detection and active response rather than broad monitoring and compliance visibility. The comparison most organisations are making is between building an internal SOC and buying MDR. A managed SOC is a genuine third option worth understanding when evaluating providers.
Comparing the delivery models

Same operational outcomes. Different cost, timeline and operating model behind them.

The two columns below compare a typical internal SOC build with a managed MDR service. Operational outcomes are similar. What differs is how the function is built, staffed and sustained over time.

Internal SOC
A capability the organisation builds
  • Staffed by security analysts employed directly by the organisation, on rotating shifts to maintain 24/7 coverage
  • Monitors the organisation's environment using internally managed tooling: SIEM, EDR, threat intelligence feeds and ticketing systems
  • Triages alerts, investigates incidents and coordinates response actions within the organisation's own processes and escalation paths
  • Organisational knowledge accumulates over time in the team, but leaves with staff when they depart
  • Full internal control over detection rules, response playbooks, escalation authority and tooling choices
  • Costs include analyst headcount, management overhead, tooling licensing and ongoing training, plus recruitment when staff turn over
MDR
A service the organisation buys
  • 24/7 analyst coverage delivered as part of the managed service. No internal headcount required
  • Telemetry collected across agreed control points such as endpoint and identity, with the platform managed as part of the service
  • Alerts triaged, incidents investigated and response actions coordinated through the service model, with escalation into the client environment where required
  • Environment knowledge lives in the service platform rather than in individual analyst heads. Continuity is maintained regardless of provider staff changes
  • Operating boundary between client and provider is defined by the service agreement. Some decisions require client authorisation, others are pre-approved
  • Costs are per-endpoint or per-user, predictable, and materially lower than equivalent in-house capability for most organisations
Side-by-side

The dimensions that drive the decision.

The same comparison condensed into the practical dimensions a buyer typically needs to evaluate.

Internal SOC
Build the function
  • 24/7 coverage — 24/7 monitoring, alert triage, incident investigation and response, when fully staffed and operational
  • Time to operational maturity — 12 to 24 months to hire, onboard, tool and reach operational maturity for a new internal function
  • Cost structure — Fixed headcount, tooling and management overhead: high and ongoing regardless of incident volume
  • Staff turnover and continuity risk — High. Security analysts are in demand. Turnover takes environment knowledge and creates operational gaps during replacement cycles
  • Environment knowledge — Deep over time, but concentrated in individuals. Risk of knowledge loss when people leave
  • Control and customisation — Full control over tooling, detection rules, response playbooks and escalation authority
  • Scale at which it is justified — Typically justified at enterprise scale with a large IT security team and specific sovereignty or regulatory requirements
  • Reporting and evidence — Internally managed reporting. Requires investment in reporting tooling and processes
Managed Detection and Response
Buy the outcome
  • 24/7 coverage — Same operational outcomes delivered as a managed service from day one of onboarding
  • Time to operational maturity — Weeks from contract to initial coverage, depending on environment complexity and agent deployment
  • Cost structure — Per-endpoint or per-user pricing: predictable, variable with environment size, and no recruitment cycles
  • Staff turnover and continuity risk — Managed by the provider. Client is insulated from analyst turnover. Environment knowledge is maintained in the platform
  • Environment knowledge — Built into the onboarding process and platform. For MSP-delivered MDR, the response path remains connected to engineers who already manage or understand the environment
  • Control and customisation — Operating boundary defined by the service agreement. Some decisions are pre-authorised; others escalate to the client
  • Scale at which it is justified — Practical for organisations outside the enterprise segment without a dedicated internal SOC
  • Reporting and evidence — Monthly reporting, incident summaries and detection documentation provided by the service, ready for board, insurer and governance use
Where each model is the right answer

When MDR is the practical option, and when an internal SOC is genuinely justified.

Both models have legitimate use cases. The two panels below describe the conditions where each typically fits.

When the organisation needs detection coverage but not the overhead of building the function
  • Endpoint tooling is generating alerts but no dedicated SOC team is available to review and act on them after hours
  • Cyber insurance or customer due diligence requires 24/7 monitoring and incident response capability
  • The IT team can manage infrastructure and general IT but does not have the security operations specialisation for a continuous detection workflow
  • Detection and response coverage is needed quickly rather than spending 12 to 24 months building an internal function
  • Budget for an internal SOC is not available, but the operational risk of having no detection capability is real
  • An Essential Eight uplift has improved prevention controls and a detection layer alongside them is the logical next step
When the scale and requirements justify building the function internally
  • The organisation has the scale and security team to justify building or managing a SOC function internally
  • Specific data residency requirements or regulatory obligations require the SOC function to be operated by the organisation itself
  • The environment is classified or restricted in ways that make external provider access impractical
  • The organisation's scale and incident volume justify the fixed overhead of an internal function at a lower cost per incident than MDR

Most Australian organisations that evaluate both options choose MDR. The internal capability path is genuinely justified at enterprise scale, under specific sovereignty or regulatory requirements, or where the organisation already has a large internal security team to build from. For most organisations, MDR delivers the required outcomes without the investment, timeline and operational overhead of building internally.

Decision matrix

Common buying situations, and what each typically points to.

These are the most common situations buyers are in when they search this question. Each points toward the model that typically fits.

  • You have endpoint tooling but alerts go unreviewed after hours and no one is watching when incidents typically escalate — MDR closes the monitoring gap immediately.
  • Your insurer is asking whether you have 24/7 monitoring and you cannot answer with confidence — MDR provides documented 24/7 coverage for the insurance submission.
  • You want detection capability within weeks, not after a 12 to 18 month hiring and tooling program — MDR deploys in weeks from contract to initial coverage.
  • You have specific sovereignty, regulatory or scale requirements that justify an internal or managed SOC rather than a narrower MDR service — an internal or managed SOC is the appropriate direction.
  • You want detection and response delivered by the same team that manages your environment — MSP-delivered MDR provides continuity between infrastructure management and security response.
  • You have improved prevention controls through Essential Eight uplift and now need stronger visibility and response capability alongside them — MDR provides the documentation and reporting needed for the assessment.
A useful test

If one of these rows reads like your current setup, the question is no longer MDR versus SOC — it is what depth of detection and response the environment actually needs.

See what MDR should provide →
Provider evaluation

What matters is not what the service is called.

A provider calling their service “SOC”, “SOC-as-a-Service”, “MDR” or “managed security operations” tells you very little about whether monitoring and response are genuinely effective for your environment. What matters is not what the service is called. It is whether the environment is being monitored continuously, whether alerts are actually investigated, and who owns the response when something happens.

The scope, depth and response ownership of MDR services varies materially between providers. These questions separate services that detect from services that act — ask them of any MDR or SOC provider:

  • Who is actually watching the environment, and when? Is it 24/7 or business hours with after-hours escalation?
  • Who investigates confirmed alerts after hours, and what is their authority to act?
  • Who owns escalation and response accountability when an incident is confirmed?
  • How quickly does the service move from detection to investigation to containment action?
  • What telemetry does the service actually cover? Endpoint only, or identity and email as well?
  • What evidence and reporting do you receive, and is it structured for insurance or governance use?
  • How much operational burden remains with your internal team after the contract is signed?
The architectural relationship

MDR is delivered in two operating tiers — and the SOC-backed tier is where the SOC-vs-MDR question is most directly answered.

For Australian organisations, Inlight IT delivers MDR-grade detection and response capability as part of Managed Cyber Security — the service that provides the deeper security operating layer above the managed IT baseline. The MCS service is delivered in two operating tiers.

  • Standard operating tier — Continuous monitoring, analyst triage and guided response across identity, endpoints and Microsoft 365. The right fit for environments that need after-hours coverage and insurer evidence without full SOC depth behind the service.
  • SOC-backed operating tier — Full security operations depth for environments that require deeper investigation, broader telemetry and after-hours response authority. The SOC layer operates behind the service with Inlight IT remaining the accountable client-facing operating layer.

This is what makes the comparison less binary than SOC-versus-MDR sometimes appears. For organisations that genuinely need SOC-depth security operations but don't have the scale to build internally, the SOC-backed tier of MCS provides that depth as a managed outcome. For organisations whose risk profile is well-served by a leaner detection and response model, the standard tier provides exactly that. The service is scoped to the environment.

The category name on the contract matters less than which operating depth is right for the environment.
Operational context

The Inlight IT view on MDR vs SOC.

A SOC is a capability. MDR is a service. The real variable is how much operational depth sits behind that service.

Inlight IT tiers MDR — delivered as part of Managed Cyber Security — to match the complexity of the client environment. Some organisations need a streamlined detection and response model. Others need a SOC-backed operating tier. In both cases, the objective is the same: shifting the monitoring, investigation and response burden away from the client team and into a service model that fits the environment properly.

The goal is service depth matched to the environment and the risk, not a one-size-fits-all category. Whether that is described as “MDR” or “SOC-backed MDR” on the contract is less important than whether the operating function behind it actually monitors, investigates and acts on what matters, around the clock, for that specific environment.

For organisations evaluating an internal SOC build, the honest test is scale and requirement. If the scale, sovereignty, regulatory or data-residency requirements genuinely justify the seven-figure annual investment and 12-to-24-month build timeline, an internal function may be the right answer. For most Australian organisations, MCS — at the standard or SOC-backed tier — delivers the same operational outcomes without that overhead.

The goal is service depth matched to the environment and the risk, not a one-size-fits-all category. Whether the operating layer is described as “MDR” or “SOC-backed MDR” on the contract is less important than whether it actually monitors, investigates and acts on what matters.

Frequently asked

Questions Australian security buyers ask when evaluating SOC and MDR.

What is the difference between MDR and a SOC?
In operational outcomes, they are closely aligned: both provide 24/7 threat monitoring, detection and incident response. The difference is who builds it and who runs it. A SOC is an internal team with ongoing headcount, tooling and management overhead. MDR is a managed service delivered externally. For most organisations, MDR delivers the practical coverage needed at lower cost and with faster deployment.
How much does a SOC cost to build?
Building a genuine 24/7 SOC capability requires multiple analysts to cover shifts, leave and training. Personnel costs alone are typically seven figures annually for a minimal viable internal function, before tooling, infrastructure and management overhead are added. This is why most Australian organisations outside the enterprise segment use MDR rather than building internally. MDR delivers the same practical coverage at materially lower cost.
What does a SOC do?
A SOC monitors the environment for threats, triages alerts, investigates incidents, coordinates containment and response, and maintains documentation of security events. It operates continuously and serves as the centralised function for all security monitoring and incident response. A SOC can be built and staffed internally, delivered by an external managed SOC provider, or structured as a hybrid where internal staff manage priorities and an external team provides 24/7 coverage.
When do you need a SOC rather than MDR?
An internal SOC is typically justified when the organisation is at enterprise scale with an existing large security team, has specific data residency or regulatory requirements that preclude external provider access, or operates in a highly classified or restricted environment. For organisations outside the enterprise segment without these specific requirements, MDR is the practical option without the investment and timeline of building internally.
Can MDR replace an internal SOC team?
For organisations that do not have an internal SOC team, MDR provides the coverage that team would have delivered. For organisations that have an internal security function, MDR can extend its capability: providing 24/7 coverage during hours the internal team is not available, adding specialised threat hunting or identity monitoring, or handling the operational monitoring workload so the internal team focuses on higher-order security work. The models are complementary as well as alternative.
What is the difference between MDR and a SOC-backed MDR service?
“SOC-backed” describes the depth of operational capability sitting behind the MDR service. A streamlined MDR model provides continuous monitoring, triage and guided containment — suitable for environments where identity, endpoint and Microsoft 365 are the primary control surfaces. A SOC-backed MDR service adds deeper investigation capability, proactive threat hunting, faster mean time to respond on high-severity incidents and pre-authorised containment actions. The right depth depends on the environment.
How is MDR delivered by Inlight IT?
Inlight IT delivers MDR-grade detection and response capability as part of Managed Cyber Security — the service designed to provide the deeper security operating layer above the managed IT baseline. The MCS service is delivered in two operating tiers, standard and SOC-backed, scoped to the environment. The SOC-backed tier is where the SOC-vs-MDR question is most directly answered: full security operations depth, delivered as a managed outcome, with Inlight IT remaining the accountable client-facing operating layer.
Practical next step

The right MDR depth for your environment, delivered as a managed service.

Find the depth that fits your risk, not the maximum.

Discuss Managed Cyber Security