SOC outsourcing: is it right for you — and how much do you actually need?

Should you outsource your SOC, or build your own?

It’s the question many conversations start with, but the answer is generally much more nuanced.

Build-versus-buy assumes there’s a single, permanent answer: run a Security Operations Centre in-house, or hand the whole thing over to a provider. But a SOC isn’t one fixed thing you either own or rent. It’s a set of capabilities — monitoring, detection, investigation, containment — and how much of each you need depends on how mature your security already is and how much risk you’re carrying.

A smaller organisation that just needs to know when something serious happens deserves a completely different answer from a regulated business whose board wants measurable risk reduction quarter-by-quarter.

All of which means that the real answer to “should I outsource or build?” is, perhaps frustratingly, another question: how much SOC do you actually need? Get that right and the build-or-buy decision mostly answers itself — because the goal is not to own a SOC or to outsource one. It is to have the right level of protection for where your business is now, without paying for capability you can’t yet use, or being caught short by capability you don’t yet have.

If you’d still like the two options weighed side by side, our guide to SOC outsourcing versus building in-house compares them factor by factor — cost, expertise, coverage and control.

What is a managed SOC?

A Security Operations Centre (SOC) is the function that monitors your systems for signs of attack, investigates what it finds, and coordinates the response. A managed SOC is that same function run by an external provider rather than staffed entirely in-house — often described as SOC-as-a-Service (SOCaaS). In practice, responsibility is shared: the provider supplies the people, tooling and round-the-clock coverage, while you keep ownership of your security decisions to a degree that depends on the level you choose.

A few related terms are used almost interchangeably, and are worth separating. An MSSP — managed security services provider — is the broad category of provider that runs security services on your behalf, of which a managed SOC is one. MDR — managed detection and response — refers more narrowly to the detect-and-respond capability at the core of a modern SOC. The label matters less than what a provider actually delivers, which is what the levels further down are designed to help you compare.

The reason any of this exists is that the underlying risk is both widespread and rising with size. In the most recent government figures, 43% of UK businesses reported a cyber breach or attack in the past year, rising to 65% of medium-sized and 69% of large organisations (Cyber Security Breaches Survey 2025/2026). At that scale, continuous monitoring has shifted from a sensible precaution to a baseline expectation — of regulators, insurers, and increasingly customers.

How do you know when you’ve outgrown your current model?

Most organisations don’t reconsider their security operations on a set schedule; they do it when the current approach starts to show strain. Those signals tend to fall into one of three recognisable situations, each pointing to a different level of support.

If you have little or no dedicated monitoring — or you’re relying on tools that raise alerts nobody has time to review — the strain shows up as uncertainty. You tend to learn about incidents later than you’d like, out-of-hours cover is informal at best, and if someone asked whether you’d know that you’d been breached, the answer is often “not quickly enough” — a delay that tends to be wider than people expect, since across all breaches the average time to identify and contain one is still around 241 days (IBM Cost of a Data Breach 2025). The gap here is coverage rather than sophistication: you need eyes on your environment around the clock, and a dependable way of being told when something genuinely matters. This is where a foundational, reactive level of cover makes most sense.

If you’re already being told when something’s wrong, the strain moves further up the chain. Your team is receiving the alerts, but they’re also the ones investigating, containing and clearing up afterwards — and the same issues keep recurring, because nobody has the time to get to the root cause. The signal here is workload and repetition. You no longer need to be told there’s a problem; you need someone to help you deal with it. That’s the point at which a more proactive, hands-on level of service starts to become the natural choice.

If response is already well handled and your day-to-day operations are under control, the strain usually comes from above. The board is no longer reassured by activity reports and tool statistics — they want evidence that risk is genuinely reducing over time. You find yourself wanting threat hunting, regular testing of your defences, and intelligence on what’s coming rather than only what’s already happened. The question has shifted from “are we covered?” to “are we becoming more resilient?” This is the territory an adaptive, intelligence-led model is built for.

If one of those sounds like you, you already have a rough sense of the level you need. The next section sets out what each of the three actually includes, so you can place yourself more precisely — and see what moving up a level would give you.

How much managed SOC do you actually need?

The three situations in the previous section correlate to three levels of managed SOC: reactive, proactive and adaptive. They are cumulative — each tier contains everything in the one before it and adds to it — so the question is less which to pick in isolation and more how far up you need to go. What changes as you move up isn’t only what gets done, but who does it. At the first level your own team still acts on what you’re told, and by the third, your managed security partner should run the operation while you are accountable for governance.

Most IT and security leaders can quickly locate themselves on that — and, just as usefully, see what the next level up would add. Which leads us to the question every one of these situations eventually reaches: what does it actually cost?

What does a managed SOC cost?

Cost is usually the question that turns a general intention into a real decision, and it’s the one where straight answers are hardest to find. Pricing is rarely published, and the figure that matters isn’t the headline fee — it’s the total cost of reaching a given level of protection, however you get there. The most useful thing to understand before any conversation is what lies behind the number.

Two factors will have the most impact on it: the level you need, and how you choose to resource it.

The level is the reactive, proactive or adaptive question from the previous sections. Broadly, cost rises as you move up, because each level adds people, tooling and expertise on top of the one before — but moving up can also lower your total cost of risk, if it prevents incidents that would have cost far more than the service. The right comparison is never the invoice in isolation; it’s the invoice set against the exposure it removes.

How you resource it is the build-or-buy question seen through a financial lens. Building the same capability in-house carries costs that a headline salary comparison tends to hide. Continuous cover means a team of several analysts rather than one, plus the recruitment, training and ongoing cost of retaining scarce specialists in a competitive market.

Then there’s the tooling, which is often underestimated. The SIEM, threat intelligence and automation platforms a SOC depends on are typically licensed by user or by data volume, carry their own support and maintenance contracts, and tend to grow in cost as your estate and log volumes do — so it rarely stays where it started.

A managed service converts most of that into a single predictable operating cost, which is often why organisations move to one. Nonetheless, the trade-off is real: you gain predictability and reach, but give up a degree of direct control — which is precisely what the levels above are designed to balance.

A few things are worth clarifying with any provider before you compare quotes, because they’re where apparent like-for-like pricing can diverge significantly:

None of this produces a single number, because there isn’t one — the right figure is specific to your size, your maturity and your risk. But knowing what drives it, and what to pin down before you compare, is what turns an opaque quote into a decision you can defend to whoever signs it off.

For a fuller breakdown — how providers structure their pricing, what building the same capability in-house really costs, and what to check before comparing quotes — see our complete guide to what a managed SOC costs.

How do you choose the right SOC provider?

Once you have a sense of the level you need, choosing a provider becomes a narrower and more focused evaluation: which one delivers that level well, and is flexible enough to scale up or down as your needs change. The aim throughout is to compare like with like — against your own requirements, rather than against each provider’s description of itself.

A few things are worth assessing directly, because they are where providers that look similar on paper start to differ:

With those factors front of mind, running the process is mostly a matter of keeping the comparison fair:

For a deeper look at judging a provider — the ten things to assess, the questions to ask each one, and the red flags to watch for — see our guide to choosing the right SOC outsourcing partner. If you’d like to follow a formal process, our guide to running a SOC procurement process walks through each stage from defining requirements to onboarding, and includes a downloadable RFP template you can edit and use. You can also see how Talanos compares directly with other providers.

None of this will guide you to a single “best” provider per se, because the right one is specific to your level, your sector and your future plans. But a process built around your requirements, rather than the most confident pitch, is what turns a shortlist into a decision you can have confidence in.

From security to resilience

The level question matters because of what it represents. Strong security operations are how an organisation becomes resilient — able to anticipate and continue despite disruption, and to recover quickly when an incident does occur. That is the real objective, and it stays the same whichever level you are at today: reactive, proactive and adaptive are steps along one path, not separate destinations.

Getting the level right, and moving up as you mature, is how that resilience builds. Each step shortens the distance between something happening and you knowing about it, then between knowing and acting, and finally between acting and being able to demonstrate — to your board, your auditors, your customers — that your risk is genuinely reducing over time. The goal should never be to own a SOC or to outsource one. It must be to keep becoming harder to disrupt, and quicker to recover when disruption happens anyway.

That is the thinking Talanos is built around. If it helps to work out where you sit today, and what moving up a level would take, that is a conversation we are always open to.

Common questions about SOC outsourcing