Managed IT vs an in-house IT team
Below roughly 100 employees, managed IT almost always wins, because one internal hire cannot cover the range of skills a modern estate needs and cannot be on call every night. Between 100 and 250 a co-managed model usually wins. Above that, an internal team with external specialists is normally the right shape. Those are rules of thumb, not laws, and the exceptions are worth understanding.
What is actually being compared
- In-house IT
- One or more employees whose job is your technology. Present, invested, and available during their working hours.
- Managed IT
- An external team running your estate under contract, with a defined response time and a documented process.
- Co-managed
- Your internal person owns priorities and relationships; the external team provides depth, cover and escalation.
How they differ in practice
| Feature | Feature | In-house IT | Managed IT | Co-managed |
|---|---|---|---|---|
Skill coverage | What one or two people happen to know | Networking, security, Microsoft 365, cloud and hardware specialists | Internal knowledge plus external depth | |
Out of hours | Goodwill, until it runs out | Contracted cover for critical issues | Contracted cover, internal escalation | |
Holiday and illness | Nobody, or a scramble | No change, the team continues | No change | |
Resignation risk | Knowledge leaves with the person | Documentation stays with the account | Reduced, documentation is maintained | |
Business context | Strong, they know your people | Weaker initially, improves with the relationship | Strong, internal person holds it | |
Cost shape | Salary, benefits, training, tools | Fixed monthly contract | Salary plus a smaller contract | |
Speed on trivial requests | Immediate, they are in the room | Fast, but through a queue | Immediate for local, queued for specialist | |
Documentation | Rarely maintained, no time | Contractual, maintained continuously | Maintained by the external side |
Choose in-house if
- Your business has an unusual technical stack that no external provider will realistically learn well, such as a bespoke platform your operations genuinely depend on.
- You need somebody physically present all day every day, which is common in manufacturing and some healthcare settings.
- You are large enough that the person will have a full week of meaningful work, and you can afford a second person so holidays do not create an outage.
Choose managed IT if
- You are under about 100 people and your current arrangement is whoever is most technical doing it alongside their real job.
- You need cover outside office hours and cannot justify a rota.
- You have compliance or customer obligations that need evidence, and nobody internally has time to maintain the documentation.
- Your last IT person left and took the knowledge with them, which is the single most common reason we get called.
Choose co-managed if
- You already have somebody good internally who is drowning in tickets and cannot get to projects.
- You have grown past 100 people and the internal person is now a single point of failure.
- You want internal ownership of priorities and relationships but need specialist depth for security, Microsoft 365 or cloud.
When the other option is right
If your requirement is somebody in the building at all times, managed IT is not the answer and we will say so. We are also the wrong choice if the value you want is deep knowledge of a proprietary application that only your team understands. In both cases hire internally, and consider a smaller external contract for the specialist areas your hire will not cover.
Whichever way you go, do these first
- Build an asset register before anything else. Age, warranty and assigned user per device. Every option gets cheaper to evaluate once you know what you own, and neither a hire nor a contract can be scoped properly without it.
- Count what IT currently costs you, honestly. Not just salaries and licences: include the hours non-IT people spend fixing things, and the days lost when something broke and nobody was available.
- Write down what actually stops the business. Not what would be annoying, what would stop revenue. That list determines the response time you need to buy, and it is usually shorter than people expect.
- If you are hiring, plan for cover. One person means holidays and illness are outages. Either budget for two or budget for external cover alongside the hire.
- If you are contracting, insist on a site audit before the quote. A price given without one is either padded or about to change.
Common questions
Talk it through with an engineer, not a salesperson
Tell us your situation and we will tell you which option fits, including when that is not us. Initial reply within 4 business hours.