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Cloud & operations

What is IT infrastructure?

IT infrastructure is the foundation under your systems: network, servers, cloud and security. See what it consists of, and when it should be modernised.

In short

IT infrastructure is the collective term for everything that makes a company's IT work: network, servers, computers, cloud services, security solutions and backup, plus the systems that tie it all together.

The infrastructure is the foundation under all your applications and data, and it determines how stably, quickly and securely employees can work. Every business has an IT infrastructure, whether it sits in its own server room, in the cloud or as a hybrid of both, and for Danish SMBs the question is rarely whether, but how, it should be run.

The key points are that the infrastructure should be seen as a whole rather than as individual parts, that outdated equipment and lack of maintenance create both outages and security holes, and that cloud has shifted many tasks from hardware to operations and management. MI Support IT designs, runs and modernises IT infrastructure for Danish businesses, from network and servers to cloud and security.

Back to the glossary

What is IT infrastructure?

IT infrastructure is the collective term for all the technology that sits underneath the company's systems and makes it possible to work: the network, the servers, the computers, the cloud services and the security solutions that protect it all. IT infrastructure is rarely something employees think about until it fails. But when email is down, files are unreachable or the internet stutters, the whole company feels how critical the foundation is.

What does IT infrastructure consist of?

A typical Danish SMB's infrastructure consists of six layers that need to work together:

  • Network: switches, routers, firewall, WiFi and VPN, in other words everything that connects machines and people.
  • Servers: local or hosted machines running files, applications and databases.
  • Clients: employees' computers, phones and tablets, which need to be managed and kept up to date.
  • Cloud services: cloud computing and SaaS solutions such as Microsoft 365, which have taken over many of the tasks servers used to handle.
  • Security: cybersecurity across the layers, from MFA on the accounts to monitoring of the whole environment.
  • Backup: a thoroughly tested backup solution that ensures data can be restored after outages or ransomware.

The point is the whole: a state-of-the-art cloud platform does not help much if the network is unstable or the backup has never been tested.

On-premises, cloud or hybrid?

Infrastructure used to sit physically in the company: a server room with machines, cooling and a UPS. Today the choice stands between three models:

  • On-premises: You own and run the equipment yourselves. Full control, but also full responsibility for power, maintenance and replacements.
  • Cloud: the infrastructure is rented as cloud computing from, for example, Microsoft Azure, and the hosting responsibility sits with the provider.
  • Hybrid: the most common model among Danish SMBs, where a few local systems live on while email, files and new applications sit in the cloud.

There is no single right answer. Legacy line-of-business systems, licensing terms and requirements around compliance and NIS2 can all pull in different directions, and the EU's cybersecurity agency ENISA points out precisely that security must be designed in, wherever the infrastructure sits.

When should the infrastructure be modernised?

The clearest signs that the infrastructure needs an overhaul:

  1. Age: servers and network equipment older than five to seven years are both more expensive to run and outside the manufacturer's support.
  2. Outages: recurring downtime and slow systems cost working hours every single week, often more than a modernisation would cost.
  3. Security debt: systems that no longer receive updates, missing MFA and untested backup are bills that grow the longer you wait.

A modernisation does not have to be one big project all at once. A prioritised plan that tackles the most important things first is almost always the best route.

How MI Support IT can help

We design, modernise and run IT infrastructure for Danish businesses: from network and servers to cloud, security and backup. It can happen as a full IT outsourcing partnership, where we take operational responsibility, or as concrete IT solutions that close the gaps in your current setup. Contact us for a no-obligation health check of your infrastructure.

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