IT Glossary - ITU Online IT Training
Service Impact Notice: Due to the ongoing hurricane, our operations may be affected. Our primary concern is the safety of our team members. As a result, response times may be delayed, and live chat will be temporarily unavailable. We appreciate your understanding and patience during this time. Please feel free to email us, and we will get back to you as soon as possible.

IT Glossary
Key Terms To Know In The IT Industry

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

Virtual Reality (VR)

Virtual reality (VR) is a simulated experience that immerses users in a computer-generated environment, typically viewed through headsets or goggles, enabling interactive and immersive experiences in gaming, training, education, and simulation.

You will find this term commonly used in Emerging Technologies, Entertainment, Training

Virtual Reality Developer

Specializes in creating immersive experiences using VR technology for gaming, education, and training simulations.

You will find this term commonly used in VR Development, Interactive Design

Virtual Reality Exposure Therapy (VRET)

The use of virtual reality technology to treat patients with anxiety disorders and phobias by exposing them to their fears in a controlled, virtual environment.

You will find this term commonly used in Healthcare IT, Virtual Reality

Virtual Reality Modeling Language (VRML)

A standard file format for representing 3-dimensional (3D) interactive vector graphics, designed particularly with the World Wide Web in mind.

You will find this term commonly used in Graphic Design, Web Development

Virtual Reality Therapy

The use of virtual reality technology as a therapeutic tool, often for psychological or physical rehabilitation purposes.

You will find this term commonly used in Healthcare IT

Virtual Reference Station (VRS)

A system used in precision navigation and GPS applications to improve accuracy through virtual base stations.

You will find this term commonly used in Networking, Geospatial Technology

Virtual Resource Pooling

The practice of aggregating resources, such as storage or networking capabilities, across a network to be used by virtual machines or applications as needed.

You will find this term commonly used in Virtualization, Cloud Computing

Virtual Retinal Display (VRD)

A display technology that projects images directly onto the retina of the eye, creating the illusion of viewing a conventional display.

You will find this term commonly used in Hardware, Display Technology

Virtual Router

A software function that replicates the functionality of a hardware router in a virtualized environment.

You will find this term commonly used in Networking, Cloud Computing

Virtual Routing

The practice of routing traffic between different virtual networks or between virtual and physical networks.

You will find this term commonly used in Networking

Virtual SAN (vSAN)

A software-defined storage solution that aggregates locally attached storage devices into a distributed storage pool shared across multiple hosts.

You will find this term commonly used in Virtualization

Virtual Secure Mode (VSM)

A security feature that isolates sensitive operations and data from the rest of the operating system to protect against vulnerabilities.

You will find this term commonly used in Cybersecurity

Virtual Server

A server at the user's or client's request that offers dedicated services without being a physically separate server.

You will find this term commonly used in Networking, Virtualization

Virtual Service Network (VSN)

A network configuration that allows for the creation of virtualized network services within a physical network infrastructure.

You will find this term commonly used in Networking

Virtual Service Router

A router operating in a virtualized environment, providing routing services without the need for dedicated hardware.

You will find this term commonly used in Networking

Virtual Space

In the context of virtual reality and augmented reality, the digital environment in which users can interact with computer-generated content.

You will find this term commonly used in Virtual Reality

Virtual Studio Technology (VST)

A standard for creating and integrating audio synthesizers and effects plugins with audio editors and hard-disk recording systems.

You will find this term commonly used in Multimedia, Audio Production

Virtual Switch

A software application that allows one virtual machine (VM) to communicate with another.

You will find this term commonly used in Cloud Computing, Networking

Virtual Switching System (VSS)

A network system that pools multiple network switches into a single logical switch to increase network redundancy and reliability.

You will find this term commonly used in Networking

Virtual Tape

A storage technology that emulates tape storage, typically used for data backup and recovery, on disk or other media.

You will find this term commonly used in Storage

Virtual Tape Library (VTL)

A data storage system that emulates a traditional tape library using disk storage, providing the benefits of tape backup with the performance and reliability of disk storage.

You will find this term commonly used in Storage

Virtual Team

A group of individuals who work together from different geographic locations, relying on communication technology such as email, video conferencing, and collaboration tools.

You will find this term commonly used in Business Strategy, Communication

Virtual Terminal (VT)

A software application that emulates a hardware terminal, allowing users to access a remote system as if they were physically present at the terminal.

You will find this term commonly used in Networking

Virtual Texturing

A technique used in computer graphics to efficiently manage and display large textures that would otherwise exceed the GPU's memory capacity.

You will find this term commonly used in Graphic Design, Game Development

Virtual Time

A concept in distributed computing and virtualization that refers to the simulation of time passing in a virtual environment.

You will find this term commonly used in Software Development

Virtual Topology

The logical layout of a network as seen by the network's users, regardless of the physical layout of the cables and hardware that comprise the network.

You will find this term commonly used in Networking

Virtual Training Environment

A simulated digital environment designed for training purposes, allowing users to practice skills and scenarios virtually.

You will find this term commonly used in Education Technology

Virtual User (VUser)

In software testing, a simulated user that mimics real user actions to test the performance and functionality of software applications.

You will find this term commonly used in Software Development, Testing

Virtual Workspace

A digital environment that provides tools and resources for remote work and collaboration.

You will find this term commonly used in Business Strategy, Collaboration

Virtual World

An online community that takes the form of a computer-based simulated environment where users can interact with one another and create objects.

You will find this term commonly used in Social Media, Gaming

Virtualization

The process of creating a virtual (rather than actual) version of something, such as hardware platforms, operating systems, storage devices, or network resources.

You will find this term commonly used in General IT

Virtualization Container

A lightweight, portable, and self-sufficient software package that contains everything needed to run an application, including code, runtime, libraries, and settings.

You will find this term commonly used in Virtualization

Virtualization Hypervisor

A software or firmware that creates and runs virtual machines, allowing multiple operating systems to run on a single physical server.

You will find this term commonly used in Virtualization

Virtualization Layer

Software that abstracts physical hardware resources and provides a virtualized environment for running virtual machines and applications.

You will find this term commonly used in Virtualization

Virtualization Management

Software tools and processes used to manage virtualized infrastructure, including servers, storage, and networks.

You will find this term commonly used in Virtualization

Virtualization Platform

A Virtualization Platform is a software or hardware infrastructure that enables the creation and management of virtual machines and virtualized environments. It provides the necessary resources and tools to implement virtualization solutions.

You will find this term commonly used in Virtualization, Cloud Computing, General IT

Virtualization Security

Measures taken to secure virtualized infrastructure, including virtual machines, hypervisors, and virtual networks.

You will find this term commonly used in Cybersecurity

Virtualization Technology

Hardware and software techniques used to create virtualized environments, including virtual machines, virtual networks, and storage.

You will find this term commonly used in Virtualization

Virtualization-Based Security (VBS)

A security feature that uses hardware virtualization features to create and isolate a secure region of memory from the normal operating system.

You will find this term commonly used in Cybersecurity

Virus

Malicious software that replicates itself and spreads to other computers or devices, often causing damage or disrupting operations.

You will find this term commonly used in Cybersecurity

Virus Scan

The process of examining files and system memory for the presence of computer viruses or malware.

You will find this term commonly used in Cybersecurity

Virus Signature

Unique patterns or characteristics of known viruses used by antivirus software to detect and remove malicious code.

You will find this term commonly used in Cybersecurity

Visibility Graph Analysis

A method used in spatial analysis and urban planning to analyze the visibility and accessibility of different points in a space.

You will find this term commonly used in Data Analysis, Urban Planning

Visibility Testing

In computer graphics, determining which objects, or parts of objects, are not visible from a certain viewpoint.

You will find this term commonly used in Graphic Design, Software Development

Visibility Zone

In cybersecurity, a defined segment of the network monitored for security threats and anomalies.

You will find this term commonly used in Cybersecurity

Visio

A diagramming and vector graphics application part of the Microsoft Office family used to create diagrams.

You will find this term commonly used in General IT, Graphic Design

Visitor Pattern

A software design pattern that allows adding new operations to existing object structures without modifying them.

You will find this term commonly used in Software Development

Visual Analytics

The science of analytical reasoning supported by interactive visual interfaces.

You will find this term commonly used in Data Analysis, Business Intelligence

Visual Basic .NET (VB.NET)

An object-oriented programming language implemented on the .NET Framework, evolved from the classic Visual Basic language.

You will find this term commonly used in Software Development

Visual Content Management

The process of organizing, storing, and retrieving digital visual content such as images and videos.

You will find this term commonly used in Web Development, Content Management

What's Your
Career Path?
CEH Career Path
Certified Ethical Hacker Career Path

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.

Total Hours
129 Hrs 51 Min
icons8-video-camera-58
807 On-demand Videos

Original price was: $129.00.Current price is: $51.60.

Add To Cart
Information Security Specialist
Entry Level Information Security Specialist Career Path

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.

Total Hours
113 Hrs 4 Min
icons8-video-camera-58
513 On-demand Videos

Original price was: $129.00.Current price is: $51.60.

Add To Cart
Network Administrator Career Path
Network Administrator Career Path

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.

Total Hours
162 Hrs 25 Min
icons8-video-camera-58
524 On-demand Videos

Original price was: $129.00.Current price is: $51.60.

Add To Cart
AWS Cloud Practitioner
AWS Cloud Practitioner Career Path

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.

Total Hours
62 Hrs 56 Min
icons8-video-camera-58
475 On-demand Videos

Original price was: $129.00.Current price is: $51.60.

Add To Cart
Network Security Analyst
Network Security Analyst Career Path

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.

Total Hours
111 Hrs 24 Min
icons8-video-camera-58
518 On-demand Videos

Original price was: $129.00.Current price is: $51.60.

Add To Cart
Information Security Analyst Career Path
Information Security Analyst Career Path

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.

Total Hours
58 Hrs 1 Min
icons8-video-camera-58
225 On-demand Videos

Original price was: $129.00.Current price is: $51.60.

Add To Cart
Pentester Career Path
Pentester Career Path

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.

Total Hours
100 Hrs 16 Min
icons8-video-camera-58
430 On-demand Videos

Original price was: $129.00.Current price is: $51.60.

Add To Cart
Kubernetes Certification
Kubernetes Certification: The Ultimate Certification and Career Advancement Series

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.

Total Hours
12 Hrs 18 Min
icons8-video-camera-58
207 On-demand Videos

Original price was: $129.00.Current price is: $51.60.

Add To Cart
Information Security Career Path
Leadership Mastery: The Executive Information Security Manager

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.

Total Hours
95 Hrs 34 Min
icons8-video-camera-58
348 On-demand Videos

Original price was: $129.00.Current price is: $51.60.

Add To Cart
Google DevOps Engineer Career Path
Google DevOps Engineer Career Path

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.

Total Hours
43 Hrs 22 Min
icons8-video-camera-58
479 On-demand Videos

Original price was: $129.00.Current price is: $51.60.

Add To Cart
Data Analyst Career Path
Data Analyst Career Path

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.

Total Hours
56 Hrs 45 Min
icons8-video-camera-58
358 On-demand Videos

Original price was: $129.00.Current price is: $51.60.

Add To Cart
ICD 9
ICD 9, ICD 10, ICD 11 : Medical Coding Specialist Career Path

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.

Total Hours
37 Hrs 56 Min
icons8-video-camera-58
193 On-demand Videos

Original price was: $99.00.Current price is: $29.00.

Add To Cart

Just Released

CompTIA Authorized Partner

All New 2025 CompTIA A+ Training

Get ready for the updated 220-1201 & 220-1202 exams with our brand-new CompTIA A+ training—designed to help you pass with confidence and start your IT career strong. Access this course and over 2,900 hours of expert-led IT training when you sign up for any of our All-Access Passes. Don’t miss out—enroll now and start learning today!

Cyber Monday

70% off

Our Most popular LIFETIME All-Access Pass