What Does an IT Department Do? (& How an MSP Helps) What Is an IT

This blog was originally published on April 4, 2022, and has since been updated for accuracy and clarity. 

An IT department manages your business technology, from network security and data storage to software updates and communication systems. For many small to mid-sized businesses, a managed service provider (MSP) can handle these same functions without the cost and complexity of building an in-house team.

Technology runs nearly every part of your business. If you're growing your business and asking whether you need a dedicated IT department, the answer starts with understanding what IT covers.

The challenge is that building and maintaining a capable IT department takes time, budget, and the right people. For many business owners, it's not always clear what that team actually needs to do, let alone who should run it.

At Intelligent Technical Solutions (ITS), we've helped hundreds of businesses across healthcare, finance, manufacturing, and automotive navigate their IT needs and keep their technology running smoothly. Our team helps business owners understand what IT really covers and how an MSP can step in to help.

In this article, you'll learn:

• What is an IT department?
• What does an IT department do?
• Who should manage IT in your business?

What Is an IT Department?

An IT department is a dedicated team of professionals that keeps your business technology running, secure, and up to date.

Its core responsibilities include:

• Managing networks and internet access
• Protecting systems from cyber threats
• Storing and backing up company data
• Supporting employees with technology
• Maintaining software and hardware

What Does an IT Department Do?

An IT department handles the day-to-day technology needs of your business, from setting up computers and managing email systems to securing your network and backing up company data.

Below are the five core areas every IT department handles:

Communication and Connectivity

Your IT team keeps your business connected, both internally and with clients. This work often includes:

• Email setup and management
• Web server and website maintenance
• Phone and communication systems
• Mobile device management

Without reliable connectivity, your team loses productivity, and your clients may experience delays or communication breakdowns.

Data Storage and Management

Modern businesses store large amounts of information digitally, from customer records to financial data. Your IT department manages where that data lives and how it's accessed.

This storage setup includes on-site servers, cloud storage systems, and backup solutions. When managed properly, your team can access records quickly and recover data if something goes wrong.

Security and Compliance

Cybersecurity is one of the most demanding parts of IT. Hackers actively target businesses of all sizes, and a single breach can shut down operations and damage your reputation.

Your IT team is responsible for:

• Monitoring the network for threats
• Managing firewalls and security tools
• Responding to security incidents
• Keeping your business compliant with industry regulations

Read: How to Protect Your IT Network (& Why Antivirus Isn't Enough)

 System Updates and Maintenance

Technology evolves quickly, and your IT department helps your business keep pace. IT teams monitor software updates, hardware upgrades, and security patches to keep systems stable, secure, and performing properly.

Falling behind on updates can create serious security exposure. According to the 2025 Verizon Data Breach Investigations Report, exploitation of vulnerabilities accounted for 20% of breaches, highlighting how delayed patching can leave systems open to attack.

Regular updates and ongoing maintenance help reduce cybersecurity risk and minimize disruptions. Beyond keeping systems patched, IT staff also help employees use new tools correctly, follow security best practices, and avoid mistakes that could put company data at risk.

 

Watch: How to Train Staff on New Systems and Technology [Video]

 Technical Support and User Assistance

Day-to-day IT support is one of the most visible functions of an IT department. When employees run into technology issues, an IT team is usually the first point of contact.

This support typically covers:

 

Small technical issues can quickly pile up and slow down your team’s workflow. With responsive IT support in place, employees get timely help, problems are resolved faster, and minor disruptions are less likely to affect the rest of the business.

Who Should Manage IT in Your Business?

Many business owners try to assign IT to someone already on staff, such as a CFO or an office manager. The problem is that IT requires specialized, ongoing attention that a non-technical employee simply cannot provide on top of their primary role.

A typical IT department has three main roles:

• Team lead: Oversees IT strategy and manages the rest of the team. In larger organizations, there may be multiple team leads, each managing a specific IT specialty.
• Specialized technicians: Deep expertise in areas like cybersecurity or server management. They handle complex technical needs that require focused knowledge.
• General technicians: Handle day-to-day tasks like email support and device setup. They cover a wide range of IT basics but may refer more complex issues or tasks to specialized staff.

Staffing all three roles in-house can be expensive and difficult for many growing businesses, and the right IT structure often changes as your organization expands.

Here’s how IT support models typically align with business size:

Business Size	Common IT Support Model
1–10 employees	Break-fix IT support or entry-level Managed IT plan
10–50 employees	Managed IT
50–150 employees	Managed IT or Co-Managed IT
150+ employees	Internal IT department, often supported by an MSP

These are general patterns. The right IT model depends on your industry, compliance needs, number of locations, and technology complexity.

Why Some Businesses Choose an MSP Instead of Building an IT Department

For many small and mid-sized businesses, hiring enough IT staff to cover all responsibilities can be difficult. Instead of building a full department internally, some organizations partner with a managed service provider (MSP) to handle these functions.

Ready to Find the Right IT Solution for Your Business?

Understanding what an IT department does is the first step in deciding how to structure your technology. From communication and data storage to security and ongoing maintenance, IT is a full-time responsibility that your business can't afford to leave unmanaged.

Since 2003, Intelligent Technical Solutions has helped businesses across a wide range of industries build reliable IT programs and maintain the technology support they need to keep operations running smoothly.

Our team provides managed IT services, cybersecurity, compliance support, and 24/7 monitoring, so your team can focus on running the business rather than troubleshooting technology.

Ready to see what the right IT support looks like for your business? Schedule a free consultation with an ITS expert to talk through your needs and explore your options.

You can also read Managed IT vs. Break-Fix IT vs. In-House IT to find the right IT model for your business.

Learn more about IT departments and managed services through these resources in our Learning Center:

• Everything You Need to Know About Managed IT
• 4 Clear Signs It is Time to Restructure Your IT Department
• An Executive's Guide to Choosing the Right MSP for Your Business [eBook]

Frequently Asked Questions

Q: What are the main roles in an IT department?

A: A typical IT department may include an IT manager or director, network administrator, help desk technician, security specialist, and systems administrator. Smaller businesses often combine several of these responsibilities under one or two people.

 

Q: What does an IT department do for a small business?

A: An IT department manages your technology environment, including networks, devices, email systems, data storage, and cybersecurity. For small businesses, this may also include vendor coordination, system maintenance, user support, and help with meeting regulatory or security requirements.

 

Q: What is the difference between an in-house IT department and an MSP?

A: An in-house IT department consists of employees hired directly by your company to manage technology internally. A managed service provider (MSP) is an external company that delivers IT support under a service agreement and often provides access to specialized tools and a broader range of expertise.