What is IT infrastructure?
IT infrastructure forms the foundation of any modern business. It comprises all the physical and virtual components required for the reliable operation of IT systems, data processing, and internal and external communication.
The structure of an IT infrastructure can generally be divided into three key areas:
- Hardware
- Software
- Networks
Hardware includes, for example, servers, clients, storage solutions, firewalls, switches, routers, access points and other network devices. These components work together as an integrated system and form the basis of a high-performance network infrastructure.
Software comprises operating systems, business applications, management platforms and security solutions. It controls the hardware, supports business processes and ensures secure and efficient operation.
Networks connect all systems with one another and ensure fast, stable and secure data exchange between users, applications and locations.
It is only through the interaction of these IT infrastructure components that a high-performance, scalable and future-proof corporate IT system can be created. As requirements change over time, the infrastructure should be flexibly expandable and adaptable to new technologies.
To ensure that the company’s IT infrastructure remains consistently high-performing, secure and available, regular maintenance, a comprehensive security strategy and professional IT monitoring are essential. This enables issues to be identified at an early stage, downtime to be minimised and smooth business operations to be ensured in the long term.
What are the key IT infrastructure components in a business?
A future-proof IT infrastructure does not consist of a single solution, but of several interlinked building blocks. These include:
- Network
- Security and backup
- Identity and access management
- Operating model (cloud, on-premises and hybrid solutions)
- Servers
- Storage
- End devices and clients
- Software and applications
- Monitoring and management
It is only the interplay of these elements that creates stability and flexibility.
Do you need support with expanding or optimising your IT infrastructure? With our CleverCare service and maintenance contracts, we offer you manufacturer-independent, straightforward and expert support.
On-premises, cloud or hybrid solution: Which operating model is right for your business?
Choosing the right operating model is one of the most important architectural decisions.
When on-premises solutions are worthwhile
These physical network components are traditionally connected to one another and to the internet via cables. This guarantees fast connections and reliable performance.
On-premises solutions are particularly suitable for businesses with high requirements for data protection, customised configurations, low latency or consistent performance. This model also ensures high bandwidth and short response times.
They are easy to maintain but are usually more expensive to maintain and expand than purely cloud-based solutions, as they rely on hardware.
When cloud solutions offer advantages
Data is stored and managed centrally and virtually in the cloud. There are usually central servers that can be accessed wirelessly, amongst other methods. This hosting is not tied to a specific location and is therefore ideal for user groups with multiple sites or decentralised access points.
Pure cloud solutions can also be provided by service providers (Network as a Service). This helps smaller businesses in particular to use professional networks without the hassle of maintenance and modernisation, and without having to employ large IT departments.
Wireless transmissions can result in higher latency. However, they are simple and flexible to set up and can usually be scaled up without any problems.
Why hybrid solutions are often the most pragmatic approach
Hybrid solutions combine on-premises IT systems with cloud services – ‘the best of both worlds’.
Companies can continue to use their existing on-premises infrastructure and supplement it selectively with cloud services. This model is particularly suitable when sensitive data or business-critical applications need to remain in the company’s own data centre, whilst services such as email, data backup, collaboration or monitoring are provided flexibly from the cloud. This allows security, control and flexibility to be combined effectively.
Existing wired networks can be selectively expanded to include wireless technologies. This allows companies to continue using their existing infrastructure whilst simultaneously integrating Wi-Fi services for mobile devices or flexible workspaces. Hybrid networks combine the high stability and bandwidth of wired connections with the flexibility of wireless networks, making them suitable for a wide variety of use cases.
However, the administrative burden is greater than with a purely on-premises or cloud-based solution. Both physical and virtual components must be regularly maintained, monitored and coordinated to ensure secure and trouble-free operation.
Companies should clarify these questions before planning their infrastructure
Before comparing providers or evaluating products, the company should clarify its own starting point.
The key factor is which business objectives the IT infrastructure is intended to support: growth, internationalisation, greater resilience, improved collaboration or faster digitalisation. This gives rise to technical requirements, but also to organisational guidelines.
Helpful key questions include, for example:
- Which business processes must be available at all times?
- Which applications are particularly critical or data-intensive?
- Which systems are regulated, sensitive or subject to compliance requirements?
- Which sites, teams and partners need to be integrated?
- Where are there legacy dependencies?
- Which parts of operations can be handled in-house, and where is there a lack of capacity or expertise?
At a glance: Which IT infrastructure suits which business requirements?
Before companies decide between cloud, on-premises or hybrid, a concise overview of which requirements typically suit which operating model can be helpful.
Why security and backup must be considered from the outset
Without security, there can be no robust IT infrastructure. Today, businesses need a multi-layered protection strategy comprising:
- network segmentation
- access control
- regular updates
- clear backup strategies
- a defined contingency plan
Backup and recovery are not a peripheral issue here, but a central part of operational capability. A good backup strategy not only addresses the question of whether data is backed up, but also how quickly systems can be restored following a failure. Regular restore tests are equally important. Only by testing data restoration in practice can one ensure that backups actually work in an emergency and that the defined recovery times can be met.
For businesses, this also requires a clear structure of responsibilities: who monitors, who responds, who documents, and who escalates?
It is particularly important that security measures are not simply ‘added on’ retrospectively, but are planned in from the outset.
Three typical approaches to modernising IT infrastructure
When developing their IT infrastructure, companies usually face three fundamental approaches, which differ significantly depending on their starting point, resources and target vision.
Rebuilding the IT infrastructure
This approach is suitable for companies planning a fundamental modernisation or wishing to develop a new IT landscape based on a clear vision.
The advantage is that the network, security, cloud connectivity and operating model can be coordinated from the outset. This approach is particularly effective where there is little legacy infrastructure or when new locations, new brands or new business models are being established.
Gradually modernising the existing IT infrastructure
This is often the realistic standard approach in larger companies. Existing systems continue to run whilst parts of the infrastructure are gradually updated, such as the network, security architecture, backup, monitoring or individual workloads.
A phased plan is crucial here to ensure that day-to-day operations are not jeopardised and that critical processes remain stable at all times.
Outsource operations using managed services
If internal capacity, expertise or 24/7 support are lacking, a managed services approach may be a sensible option. Under this approach, an external partner takes over parts of the operations, such as monitoring, patch management, backup management or infrastructure support.
This is particularly attractive when availability and standardisation are more important than maximum internal control.
What does the future hold for corporate network infrastructures?
The IT sector can no longer ignore buzzwords such as artificial intelligence (AI). Those who start exploring the integration of AI into their own infrastructure in good time can already test and reap the benefits today.
Hardware is also becoming increasingly powerful, enabling faster data processing and even better communication between network components.
Developments regarding general corporate infrastructure are set to be particularly exciting. Hybrid or remote working is increasingly becoming the norm, which is why companies that have so far primarily set up on-premises networks will be forced to switch to more modern and flexible solutions.
Conclusion: The right IT infrastructure must be approached strategically
The right IT infrastructure is not necessarily the most cutting-edge solution, but rather the one that supports business processes reliably, securely and scalably.
For businesses, this means, above all, thinking strategically, prioritising processes and choosing between cloud, on-premises or hybrid solutions not based on buzzwords, but on real requirements.
Those who prepare infrastructure decisions thoroughly reduce risks, increase operational reliability and create a stable foundation for growth. The real competitive advantage does not come from individual technologies, but from an architecture that suits the business.
Professional advice on your IT infrastructure from it-market
it-market helps businesses select the right infrastructure solutions in a way that makes strategic and financial sense: from network components and security and storage solutions right through to scalable operating models.
Need some help? No problem! Our sales team is on hand as your professional partner to help with any problems, questions or requests you may have. All components are available as new or fully refurbished through IT remarketing, and come with a warranty of up to 3 years.
FAQ: Frequently asked questions about corporate IT infrastructure
What components make up the IT infrastructure?
The IT infrastructure comprises all the technical systems that enable a company’s IT operations. These include, amongst others:
- Network
- Servers
- Storage systems
- Cloud services
- Security solutions
- Backup and recovery systems
- Software and licence management
- End devices / clients (PCs, laptops, thin clients and mobile devices)
- Virtualisation platforms (VMware, Hyper-V, Proxmox, container platforms)
- Communication solutions (VoIP, Microsoft Teams, video conferencing systems)
- Monitoring and management (monitoring, logging, patch and asset management)
- Identity and access management (Active Directory, LDAP, MFA)
- UPS and power supply systems
How do you plan an IT infrastructure?
Planning begins with the business requirements: Which processes are critical, what security and compliance requirements apply, and how scalable does the infrastructure need to be? Only then are the architecture, operating model and security concepts defined.Which is better: the cloud or on-premises?
That depends on the company’s requirements. Cloud solutions offer high flexibility and scalability, whilst on-premises solutions allow for greater control and lower latency. Many companies therefore now opt for hybrid infrastructures.When is a hybrid IT infrastructure worthwhile?
Hybrid models are particularly suitable when existing systems are to continue to be used, but cloud services need to be integrated at the same time. They combine flexibility with control and are therefore the standard in many companies.