What is Information Technology (IT)?

Ross Jukes
Last updated: May 20, 2024
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IT, or information technology, refers to any hardware, software component or service that is used to process, store, secure, generate or transmit information. It encompasses a vast range of technologies that are used for collecting, storing, retrieving, transmitting and manipulating data.

Hardware refers to the physical components of an IT infrastructure. Software refers to the logical components that run on hardware − and services refer to activities that optimize the use of both hardware and software components.

An IT department’s overall strategy, budget and performance are typically overseen by a Chief Information Officer (CIO). In large organizations, a Chief Technology Officer (CTO) will sometimes share responsibilities with the CIO.

The CIO’s job focuses on aligning IT strategies with business objectives, managing IT investments and ensuring the smooth operation of IT services. The Chief Technology Officer’s job is more focused on technology itself – including evaluating new technologies, architecting technology solutions and overseeing technology research and development.

XPS.NET Explains the IT Definition

Harold J. Leavitt and Thomas L. Whisler are credited with coining the term ‘information technology’ in 1958 to differentiate between machines specifically designed for limited functions and general-purpose computers that can be programmed for various tasks.

In a paper published by the Harvard Business Review, Leavitt and Whisler’s definition described three emerging uses for computers: processing large amounts of data; applying statistical and mathematical methods to decision-making challenges; and simulating complex thought processes through computer programs.


Since they were first invented some fifty years ago – microprocessors have advanced rapidly along with personal computers. Today it is hard to imagine life without them as they have become such an integral part of commerce across all sectors.

Businesses in multiple industries have come to understand how useful IT systems are when it comes to communicating new ideas or products between business partners or just internally throughout different teams within one company. This technology has revolutionized the way businesses operate by transforming communication, collaboration and general interaction with customers/partners.

As network speeds increase and platforms continue to develop, IT departments need to stay up-to-date with all current trends.

History of Information Technology

Information technology was first introduced as a component in the broader field of Information and Communication Technology (ICT). As such many large corporations had separate IT and ICT departments that each had their own responsibilities that were typically vastly different from the other. 

The IT department focused on managing internal computing systems, networks, software applications and data stores specific to the organization. The role involved lots of maintenance work to keep everything running smoothly. 

History of Information Technology

The ICT department on the other hand had a much broader focus that involved collaborating with the IT infrastructure team while also integrating internal and external networks. They were responsible for managing telecommunications technology and conducting business with tech vendors.

In recent years, these two roles have begun to merge as more companies begin to understand how useful it is for them to be one united team rather than two separate entities.

Nowadays, several large corporations have merged the two departments under “enterprise IT” or simply “IT.” This demonstrates a connection and more holistic approach to managing modern information and communication technologies. It also aims to shift the organizational IT philosophy from a standard “keeping the lights on” method to strategically utilizing technology to drive business innovation, enhance operational efficiency, and create competitive advantages.

Examples of IT Components

Information technology consists of hardware, software, services, and supporting infrastructure that all work together to process, store, secure and transmit data. Here are some key examples:


  • Computers and mobile devices
  • Servers & data center equipment
  • Network infrastructure (routers, switches etc.)
  • Data storage systems (disk arrays, tape libraries etc.)
  • Input/output devices (printers, scanners etc.)
  • Audio/video equipment
  • Internet of Things (IoT) devices 


  • Operating systems (Windows, Linux, etc.)
  • Office productivity suites (Microsoft Office etc.)
  • Customer relationship management software 
  • Enterprise resource planning systems 
  • Business intelligence platforms 
  • Artificial intelligence platforms 
  • Cybersecurity tools 
  • Development tools  
  • Web browsers
  • Cloud computing services
  • Mobile apps 

IT Services

  • IT support 
  • Network Administration
  • Data backup 
  • Software development 
  • Cloud integration services 
  • Training services 
  • Cybersecurity monitoring 

IT Infrastructure

  • Data centers 
  • Corporate networks
  • Internet connectivity  
  • IT operations management 

The Importance of IT

Information technology is essential across nearly every industry. Its goal is to allow organizations to operate efficiently while maintaining their competitive edge. Here are some ways that value is driven by IT:

Communication and Collaboration: Emails, messaging and real-time co-authoring have made it so teams can share work seamlessly even if they’re miles away from each other.

Operational Efficiencies: Optimize workflows by using automation systems that reduce manual effort.

Customer Experience: Reach customers through different avenues such as websites & mobile apps.

Business Intelligence: Data mining and business intelligence provide insights into market trends, customer preferences, operational performance, and new opportunities.

Product and Service Innovation: IT makes it easier to research ideas by simulating them quickly. 

Competitive Advantages: Get a head start in supply chains over competitors. 

Risk Management and Compliance: IT systems support governance, risk management, data privacy, and regulatory compliance in an increasingly complex world.


We live in a digital world. So taking care of IT systems and making sure they’re safe is one of the most important things a company can do. Certain solutions like encryption, firewalls, and monitoring have to be put in place to stave off cyber threats from data and infrastructure.

IT Service Management 

The IT team’s main job is to make sure employees can easily do their jobs. To do this, it uses IT service management (ITSM). This helps design, deliver, support, manage, and track the lifecycle of your IT services. Standardized processes are implemented so that end users can be supported at all times.

There are multiple steps to ITSM, such as:

  • Incident management
  • Problem management
  • Change management
  • Release management
  • Configuration management
  • Service level management
  • Availability management
  • Capacity management
  • Business continuity management 
  • Financial Management for IT services

IT Roles and Careers

IT is an umbrella term for many different career paths. However, most roles consist of being in support operations or engineering/development.

Some common positions are:

Support Operations

  • Support Specialist/Help Desk: Someone who’s got your back when you need something done.
  • Technician: Someone who knows their way around the tech inside Company X.
  • Administrator: The guy who makes sure every server is running smoothly.
  • Cloud Architect: Building new servers through cloud technology.
  • Database Administrator: Designing databases that keep customer information safe.

Development and Engineering

  • Development/Engineer: Writing code for either computer systems or a website.
  • Analyst: Analyzing how much people use your app with numbers from Big Data sets.
  • Machine Learning Engineer: Designing AI software that allows your computer systems to learn.

Security and Assurance

  • Analyst: Keeping data safe through prevention methods (encryption) but also through detection methods (monitoring).
  • Architect: Building a security plan before any data is put online.
  • Penetration Tester: Hacking into your company’s own data to see how strong the security is.
  • Analyst: Investigate and recover from cyber attacks that try to steal customer information.
  • Auditor: Making sure all IT systems are compliant with laws.

Management and Leadership

  • Project Manager: Ensures everyone meets deadlines throughout a project.
  • Portfolio Manager: Deals with all IT projects within Company X and makes sure everything runs smoothly.
  • Service Manager: Manages IT services to provide the best support options for employees and customers. 
  • CIO/CTO: High-level execs who manage IT or technology at a business.

To do well in this industry, you need to be technical but also have great problem-solving skills and be able to think critically. Continual learning is essential if you want to keep up with new technologies.

While it’s common for people in IT fields to have degrees in computer science or information systems, they’re not necessary. Some career paths can be obtained through:

  • Associate’s degree
  • Certifications
  • Bootcamps or self-study
  • Non-related internships
  • Military training

Dynamic IT Certifications

While often preferred, an IT job doesn’t always require a bachelor’s degree in the field. Some roles can be achieved with an associate degree, on-the-job training and certifications. Specialized certificates for particular areas of information technology such as cybersecurity and data science are sometimes just as — if not more — valuable.

Here are some popular IT certifications known to pay well:

AWS Certifications: AWS offers several certifications across various cloud computing specialities. Examples include solutions architect, developer, sysops administrator, security and machine learning.

Microsoft Azure certifications: Like AWS’ counterpart above, Microsoft also has an extensive portfolio of Azure certifications for various cloud roles such as solutions architect, developer, data scientist and security specialist.

Cisco certifications: Popular options range from basic to advanced levels of expertise and specialization. They include Cisco Certified Network Associate (CCNA), Cisco Certified Network Professional (CCNP) and Cisco Certified Internetwork Expert (CCIE).

Certified Agile Leadership (CAL): Particularly relevant certification for project managers, scrum masters, product owners or anyone else involved in agile project delivery.

CompTIA A+: This certification validates understanding of basic computer hardware and software; operating systems; networking; and troubleshooting. It is often considered an entry-level certificate for aspiring IT professionals, technicians and help-desk personnel.

CompTIA Network+: Certifies comprehensive knowledge of network design; setup; management; troubleshooting; etc.

CompTIA Security+: Recognizes abilities in network defense; threat handling; secure communications; etc., all related to IT security.

Certified Information Systems Security Professional (CISSP): CISSP is a crucial certification specifically for cybersecurity professionals. It demonstrates knowledge in a broad range of security domains including network security; cryptography; identity and access management (IAM); risk management

Mobile Device Security Analyst (GMOB): Confirms that someone knows how to properly secure mobile devices that are accessing confidential information.

Certified Wireless Network Professional (CWNP): A series of certifications that verify expertise in enterprise Wi-Fi.

Information Technology Infrastructure Library Expert Level (ITIL 4): This IT service management certification has four certification paths.

Google Cloud Certifications: Google offers three levels of cloud certifications — foundational, associate and professional.

Project Management Professional (PMP): PMP is another useful certification for IT professionals. It is arguably the most popular certification for demonstrating a job candidate has the skills to deliver an IT project within budget and on time.

FAQs About Information Technology (IT)

What is the difference between Information Technology (IT) and Computer Science (CS)?

Information Technology (IT) focuses on the implementation and management of computer systems, networks, and infrastructure to support organizational objectives. This deals with the practical application of technology to solve business problems. However, Computer Science (CS) is more concerned with the theoretical foundations of computing, algorithms, programming languages, and software development principles. CS professionals often work on creating new technologies and advancing the field of computing.

What skills are essential for a career in IT?

Essential skills for a career in IT include proficiency in programming languages, understanding of networking concepts, problem-solving abilities, analytical thinking, attention to detail, effective communication, project management skills, and a willingness to learn continuously while also adapting to new technologies.

Some emerging trends in IT include artificial intelligence (AI) and machine learning adoption, edge computing, quantum computing, 5G technology, blockchain technology, cyber security advancements, Internet of Things (IoT) integration, augmented reality (AR) and virtual reality  applications; as well as sustainable practices

How can businesses leverage Information Technology to gain a competitive advantage?

Businesses can leverage IT by implementing innovative solutions to improve operational efficiency as well as customer experiences. Also optimizing decision-making processes through data analytics enables remote work capabilities; and stay ahead of technological disruptions within their industries.

What are some common challenges faced by IT professionals?

Common challenges faced by IT professionals include cybersecurity threats and data breaches managing wide-ranged infrastructures ensuring regulatory compliance integrating old systems with modern ones addressing skill gaps within the workforce balancing innovation needs with system stability.

How important is cybersecurity in Information Technology?

Cybersecurity is critically important in IT, it maintains the integrity and availability of systems and ensures user privacy. Burdening organizations with attacks can be damaging to their reputation and trust. Luckily, as threats increase so does its priority.

What are some best practices for implementing IT projects successfully?

Some best practices for implementing successful IT projects include clearly defining project objectives and scope, involving stakeholders throughout the project lifecycle, conducting thorough requirements analysis, developing a realistic plan with achievable milestones, allocating resources effectively, managing risks proactively maintaining open communication channels, and regularly evaluating progress against predefined metrics.


Information Technology (IT) is a dynamic field that plays a crucial role in the success of businesses across all industries. The technology processes information; from hardware to services and infrastructure. As technology advances more roles will be created by professionals who can solve complex problems; along with shaping our future on how we live and work.

By staying informed about emerging trends and acquiring relevant skills individuals will thrive and ensure they are ready to take on any challenges thrown their way.

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Ross Jukes
Ross Jukes
Ross Jukes is an accomplished American copywriter with a Bachelor’s Degree in English Literature and a minor in Creative Writing. Based in the United States, Ross is a language expert, fluent in English and specializes in creating compelling and engaging content. With years of experience in the industry, he has honed his skills in various forms of writing, including advertising, marketing, and web content. Ross's creativity and keen eye for detail have made him a valuable asset in the field of copywriting, where he continues to excel and innovate.

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Purchases via our affiliate links may earn us a commission at no extra cost to you, and by using this site, you agree to our terms and privacy policy.

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