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IT Terms Glossary Master Guide for Beginners

IT Terms Glossary feature image

An “IT terms glossary” can be a helpful resource for individuals who are not well-versed in the world of information technology.

This type of glossary can provide definitions for common IT terms, as well as explanations for how these terms are used in relation to one another.

In addition, an it terms glossary can be a valuable resource for those who are looking to learn more about IT concepts and principles.


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


IT Terms Starting with the Letter A

Affiliate Marketing– is a performance-based marketing strategy in which a business rewards one or more affiliates for each visitor or customer brought about by the affiliate’s own marketing efforts.

Adware-Software that is downloaded onto a user’s computer without their knowledge. Adware can be used to track a user’s online activity and show them targeted ads.

Affiliate-An affiliate is someone who promotes a product or service in exchange for a commission. Affiliates can be individuals or companies.

Affiliate Link-An affiliate link is a special URL that contains the affiliate’s ID. This link is used to track sales and commissions.

Affiliate Network-An affiliate network is a third-party company that connects affiliates with merchants. Affiliate networks are responsible for tracking sales and managing affiliate payments.

Affiliate Marketing Forum-An affiliate marketing forum is an online community where affiliate marketers can share tips, advice, and support.

Above the Fold-Above the fold is the portion of a web page that is visible without scrolling.

AD Exchange-An ad exchange is a marketplace where advertisers can buy and sell advertising space.

AD Network-An ad network is a company that connects advertisers with publishers. Ad networks are responsible for delivering ads to websites and managing payment options.

AD Server-An ad server is a platform that serves ads to website visitors. Ad servers track clicks and impressions,

Advertiser-An advertiser is a company or individual that pays to display ads on a website.

Affiliate Program-An affiliate program is a marketing program that pays affiliates for referring customers to a merchant.

Alexa Rank-Alexa Rank is a metric that measures the popularity of a website.

Alt Tag-An alt tag is an HTML attribute that is used to describe an image. Alt tags are important for SEO because they help search engines understand what an image is about.

Analytics-Analytics is the process of collecting and analyzing data. Analytics

Alt Text-Alt text is the text that is displayed in place of an image. Alt text is important for SEO because it helps search engines understand what an image is about.

Anchor Text-Anchor text is the text that is used to link to another web page. Anchor text is important for SEO because it helps search engines understand what a page is about.

API-An API is a set of programming instructions that allow software to interact with other software.

APK Offers-APK offers are a type of affiliate offer that is popular in the mobile app industry.

APP Store-An app store is an online marketplace where mobile apps can be downloaded.

A/B Testing-A/B testing is a method of comparing two versions of a web page to see which one performs better. A/B tests are often used to test different designs or call-to-action buttons.

Auto-Download Offers-Auto-download offers are a type of affiliate offer that is popular in the mobile app industry.

IT Terms Starting with the Letter B

A person typing BLOG into a laptop

BANNER AD-A banner ad is a type of online advertising that consists of a graphic image, usually placed at the top or bottom of a web page.

BLOG-A blog is a type of website that contains articles and other content. Blogs are often updated

BACKLINK-A backlink is a link from one website to another. Backlinks are important for SEO because they help search engines understand the popularity and relevance of a website.

BOUNCE RATE-Bounce rate is the percentage of visitors who leave a website after viewing only one page. A high bounce rate usually indicates that a website’s design or content is not relevant to the visitor’s needs.

BROWSER-A browser is a software program that allows users to access the internet and view web pages.

BLACK HAT SEO-Black hat SEO is a type of optimization that is used to improve a website’s ranking in search engines, but goes against the guidelines set by the search engine. Black hat SEO techniques can result in a website being banned from a search engine.

BLACKLIST-A blacklist is a list of websites that are not allowed to be accessed. Blacklists are often used to block websites that contain malware or other malicious content.

IT Terminology with the Letter C

CACHE-A cache is a storage location where data can be stored for quick access. Caches are often used to store website data so that it can be loaded more quickly the next time a user visits the site.

CALL-TO-ACTION-A call-to-action is an element on a web page that encourages users to take some action, such as clicking a button or filling out a form.

CLICK-THROUGH RATE-Click-through rate is the percentage of times an ad is clicked divided

CACHE PLUGIN-A cache plugin is a type of software that is used to improve the performance of a website. Cache plugins store website data so that it can be loaded more quickly the next time a user visits the site.

CANONICAL URL-A canonical URL is the preferred version of a web page that should be displayed in search results. Canonical URLs are often used to

CLICK-A click is when a user clicks on an affiliate link or ad.

COOKIE-A cookie is a small piece of data that is stored on a user’s computer. Cookies are often used to store information about a user’s preferences or login status.

CONTENT MARKETING-Content marketing is the process of creating and distributing content in order to attract and retain customers.

CONVERSION RATE-Conversion rate is the percentage of visitors to a website who take some action, such as clicking a button or filling out a form.

CSS-CSS is a style sheet language that is used to format the appearance of web pages.

CHARGE BACK-A charge back is when a customer disputes a charge on their credit card. Chargebacks can occur if a customer is not happy with the product they purchased, or if they feel they were charged more than they should have been.

CPC-Cost per click is the amount an advertiser pays each time an ad is clicked.

CRO-Conversion rate optimization is the process of increasing the percentage of visitors to a website who take some action, such as clicking a button or filling out a form.

CTR-Click-through rate is the percentage of times an ad is clicked divided by the number of times it is seen. CTR is often used to measure the effectiveness of an ad.

CLICK FRAUD-Click fraud is when someone clicks on an ad with the intention of causing the advertiser to lose money. Click fraud can be done manually or through automated software.

CLICK ID-Click ID is a unique identifier that is assigned to each click on an ad. Click IDs can be used to track the effectiveness of an ad campaign.

CMS-A content management system is a type of software that is used to create and manage website content. WordPress is a popular example of a CMS.

COMPRESSION-Compression is a type of data reduction where data is reduced in size so that it can be stored or transmitted more efficiently.

CONVERSION-A conversion is when a visitor to a website takes some action, such as clicking a button or filling out a form.

COOKIE BANNER-A cookie banner is a message that is displayed to users when they first visit a website. The message typically informs users that the site uses cookies and explains what they are used for.

COOKIE CONSENT-Cookie consent is when a user gives their permission for a website to store cookies on their computer. Cookie consent can be given through a banner or popup message, or through a settings page.

CLICK THROUGH-A click through is when a user clicks on an affiliate link or ad.

CLOAKING-Cloaking is a black hat SEO technique where the content that is displayed to users is different from the content that is shown to search engines. Cloaking is done in order to improve a website’s ranking in search results.

COMMENT SPAM-Comment spam is when someone posts comments on a blog or forum with the intention of promoting their own website or product. Comment spam can be done manually or through automated software.

CONTENT AGGREGATOR-A content aggregator is a website that collects and displays content from other websites. Content aggregators are often used to provide an overview of a particular topic or industry.

CONTENT DELIVERY NETWORK-A content delivery network is a system of computers that delivers content to users. Content delivery networks are often used to improve the performance of websites by providing a local copy of the content.

CONTENT MANAGEMENT SYSTEM-A content management system is a type of software that is used to create and manage website content. WordPress is a popular example of a CMS.

COMMISSION-A commission is a fee that is charged by an affiliate for each sale or lead that they generate. Commissions can be based on a fixed amount or a percentage of the sale.

CREDIT CARD-A credit card is a type of payment card that can be used to make purchases, withdraw cash, or transfer funds. Credit cards are issued by banks and financial institutions.

CYBER MONDAY-Cyber Monday is a marketing term for the Monday after Thanksgiving in the United States. The term was coined in 2005 and has become one of the busiest shopping days of the year.

CONTENT FARM-A content farm is a website that produces large amounts of low-quality content in order to rank high in search results. Content farms are often criticized for their poor quality content.

CONTEXTUAL LINKS-Contextual links are links that are related to the content on a page. Contextual links can be from other pages on the same website or from other websites.

COUPON-A coupon is a code or voucher that can be used to get a discount on a purchase. Coupons are often used to encourage people to buy products or services.

CPA – COST PER ACQUISITION-Cost per acquisition is a pricing model where advertisers pay for each lead or sale that they generate. CPA is often used in affiliate marketing.

CPC-COST PER CLICK-Cost per click is a pricing model where advertisers pay for each click on their ad. CPC is a common pricing model for search engine advertising.

CPI-COST PER IMPRESSION-Cost per impression is a pricing model where advertisers pay for each time their ad is shown. CPI is a common pricing model for display advertising.

CPM-COST PER MILLE-Cost per mille is a pricing model where advertisers pay for each thousand impressions of their ad. CPM is a common pricing model for display advertising.

CPS-COST PER SALE-Cost per sale is a pricing model where advertisers pay for each sale that they generate. CPS is a common pricing model for affiliate marketing.

CRO-CONVERSION RATE OPTIMIZATION-Conversion rate optimization is the process of improving the percentage of visitors to a website who take a desired action. CRO is often used to improve the performance of website marketing campaigns.

CPL – COST PER LEAD-Cost per lead is a pricing model where advertisers pay for each lead that they generate. CPL is a common pricing model for affiliate marketing.

CPM – COST PER ONE THOUSAND IMPRESSIONS-Cost per 1000 impressions is a pricing model where advertisers pay for each thousand impressions of their ad. CPM is a common pricing model for display advertising.

CPS – COST PER SECOND-Cost per second is a pricing model where advertisers pay for each second that their ad is shown. CPS is a common pricing model for video advertising.

CPV – COST PER VIEW-Cost per view is a pricing model where advertisers pay for each view of their ad. CPV is a common pricing model for video advertising.

CRAWLERS-Crawlers are software programs that visit websites and index their content. Google bot is an example of a crawler.

CRM-CUSTOMER RELATIONSHIP MANAGEMENT-Customer relationship management is the process of managing customer data and interactions. CRM is often used to improve customer service and sales.

CREATIVE-Creative is a term used to describe the content of an ad, such as the text, images, or video. Creatives are often created by ad agencies or marketing departments.

CSV FILE-A CSV file is a type of data file that stores tabular data. CSV files are often used to store spreadsheet data.

CUSTOM AUDIENCE-A custom audience is a group of people who have been selected by an advertiser to receive their ads. Custom audiences can be created based on interests, demographics, or behaviors.

CSS-CASCADING STYLE SHEETS-Cascading style sheets are a type of code that is used to style the appearance of HTML documents. CSS can be used to control the layout, colors, and fonts of a website.

IT Terminology with the Letter D

A laptop with the words DIGITAL MARKETING

DEFAULT-A default is a value that is used when no other value is specified. For example, if a user does not specify a color preference, the default color may be used

DNS-Domain name system is a system that converts domain names into IP addresses. DNS is necessary for users to be able to access websites.

DOMAIN-A domain is a unique address that identifies a website on the internet. Every website has a domain, and domains are often used as email addresses or as part of a URL.

DEDICATED SERVER-A dedicated server is a type of web hosting that allows a website to have its own server. Dedicated servers are more expensive than shared servers, but they offer better performance and security.

DEDICATED HOSTING-Dedicated hosting is a type of web hosting where a website is hosted on its own server. Dedicated hosting is more expensive than shared hosting, but it offers better performance and security.

DIRECTORY-A directory is a type of website that contains a list of links to other websites. Directories are often organized by topic or location.

DISCOUNT-A discount is a reduction in the price of a product or service. Discounts are often offered to customers who purchase in bulk or who sign up for a long-term service.

DISPLAY ADS-Display ads are type of online advertising that uses images, videos, or text to promote a product or service. Display ads are often found on websites, social media, and email inboxes.

DOMAIN AUTHORITY-Domain authority is a score that represents how well a website is likely to rank in search engine results. Domain authority is often used as a metric to compare the relative popularity of websites.

DYNAMIC IP ADDRESS-A dynamic IP address is an address that can change over time. Dynamic IP addresses are often used by ISPs to provide service to customers.

DAILY BUDGET-A daily budget is the amount of money that an advertiser is willing to spend on a campaign each day. Daily budgets are often used to control spending on campaigns.

DATAFEED-A data feed is a type of file that contains information about products or services. Datafeeds are often used by e commerce websites to list their products for sale.

DEVICE-A device is a piece of hardware that can be used to access the internet. Common devices include computers, smartphones, and tablets.

DIALOG BOX-A dialog box is a type of user interface that allows users to input information or make selections. Dialog boxes are often used in software applications.

DIGITAL-Digital refers to anything that can be represented by a set of numbers. Digital media, such as images and videos, are often stored as digital files.

DIGITAL MARKETING – Digital marketing is the use of digital channels to promote or market products or services. Digital marketing can be used to reach a wide audience through various online platforms.

DIGITAL MEDIA-Digital media are any type of media that can be stored as a digital file. Examples of digital media include images, videos, and music files.

DAYPARTING-Day parting is the practice of targeting ads to specific times of day. Day parting is often used to reach audiences during peak hours or to avoid showing ads during off-peak hours.

DEMOGRAPHICS-Demographics are the characteristics of a population, such as age, gender, income, and location. Demographics are often used to target audiences for marketing purposes.

DOUBLE CLICK-Double click is a type of user input that select an element on a screen. Double click is often used to open files or launch applications.

DEEP LINKING-Deep linking is the practice of linking to a specific page on a website, rather from the home page. Deep links are often used to promote specific content or products.

DSP – DEMAND-SIDE PLATFORMS-A demand-side platform (DSP) is a type of software that allows advertisers to buy ad space in real-time. DSPs are often used to purchase ad space on websites, mobile apps, and other digital platforms.

DIRECT BILLING FLOW-Direct billing flow is a type of billing arrangement in which an advertiser pays for ad space directly to the publisher. Direct billing flow is often used to simplify the billing process.

DATA MINING-Data mining is the process of extracting valuable information from large data sets. Data mining can be used to find trends or patterns in data.

DIRECT BUY-A direct buy is an advertising purchase that is made without the use of an intermediary. Direct buys are often made by advertisers who have a specific audience in mind.

DEFAULT CREATIVE-Default creative is the advertising content that is served to an audience if no other content is available. Default creative is often used as a fallback for ad campaigns.

DEFAULT IMAGE-A default image is an image that is used in place of a missing image. Default images are often used to improve the visual appearance of a website or document.

DYNAMIC CREATIVE-Dynamic creative is a type of advertising content that can be customized for each individual viewer. Dynamic creative is often used to personalize ads for target audiences.

DISCLOSURE-A disclosure is a statement that provides information about a product or service. Disclosures are often used to inform consumers about potential risks or benefits of using a product.

DOUBLE OPT-IN-Double opt-in is a type of email confirmation that requires users to confirm their subscription twice. Double opt-in is often used to reduce spam or unwanted emails.

DUPLICATE CONTENT-Duplicate content is any content that appears on more than one website. Duplicate content can be caused by errors, plagiarism, or deliberate copying.

DUTY CYCLE-A duty cycle is the amount of time that a machine or device can be used before it needs to rest. Duty cycles are often used to prevent overheating or damage to equipment.

Dwell Time-Dwell time is the amount of time that a user spends on a page before leaving. Dwell time is often used as a measure of engagement or interest.

DYNAMIC TRACKING-Dynamic tracking is the process of automatically updating information in a database. Dynamic tracking is often used to keep track of inventory levels or customer data.

IT Language with the Letter E

E-COMMERCE-E-commerce is the buying and selling of goods and services online. E-commerce businesses can range from small businesses to large multinational corporations.

EARLY ADOPTER-An early adopter is a person who adopts new products or ideas before the majority of people. Early adopters are often trendsetters or opinion leaders.

EASY-TO-USE INTERFACE-An easy-to-use interface is a user interface that is simple and intuitive to use. Easy-to-use interfaces are often used

EMAIL MARKETING-Email marketing is the process of sending promotional messages to customers via email. Email marketing can be used to promote sales, special offers, or new products.

ENGAGEMENT RATE-The engagement rate is the percentage of people who interact with an ad or piece of content. Engagement rates are often used to measure the success of an advertising campaign.

EXIT RATE-The exit rate is the percentage of people who leave a website after viewing a page. Exit rates are often used to measure the effectiveness of a website’s design.

EXPANDED TEXT AD-An expanded text ad is a type of advertising that allows more text to be displayed than traditional ads. Expanded text ads are often used to improve click-through rates.

EXPOSURE-Exposure is the amount of time that an ad is seen by an audience. Exposure can be measured in terms of impressions or reach.

EPC – EARNINGS PER CLICK-EPC is the amount of money that an advertiser earns for each click on an ad. EPC is often used to measure the effectiveness of an advertising campaign.

Enterprise system- Enterprise systems are designed for large businesses that have multiple locations and need to track information at the individual store level.

IT Language with the Letter F

A woman using face recognition

FACIAL RECOGNITION-Facial recognition is a technology that can identify people by their facial features. Facial recognition is often used for security or marketing purposes.

FALSE POSITIVE-A false positive is a result that indicates a problem when there is none. False positives can occur in tests or surveys.

FAMILIARITY BIAS-The familiarity bias is the tendency to prefer things that are familiar to us. The familiarity bias can lead us to make poor decisions.

FAVORABILITY-Favorability is the measure of how positively people feel about a brand or product. Favorability can be measured in terms of awareness, brand equity, or customer satisfaction.

FEATURE CREEP-Feature creep is the tendency for products to become overloaded with features. Feature creep can lead to problems with usability or quality.

FILTER BUBBLE-A filter bubble is a state of isolation that can occur when we only see information that agrees with our own views. Filter bubbles can limit our understanding of the world and make it difficult to find new information.

FIRED PIXEL-A fired pixel is a pixel that has been turned on by an external stimulus, such as a click or view. Fired pixels are often used to track user behavior.

FLASH MOB-A flash mob is a group of people who assemble suddenly in a public place and perform an action. Flash mobs are often used for political or social protest.

FIRST CLICK-The first click is the first action that a user takes after seeing an ad. The first click is often used to measure the effectiveness of an advertising campaign.

FOCUS GROUP-A focus group is a small group of people who are asked about their opinions on a product or service. Focus groups are often used in market research.

FLAT DEAL-A flat deal is a type of advertising that does not offer any discounts or special offers. Flat deals are often used to attract customers who are not price-sensitive.

FOLLOWERS-Followers are people who subscribe to a person or organization’s social media updates. Followers can be used to measure the popularity of a person or organization.

FREQUENCY CAPPING-Frequency capping is the process of limiting the number of times that an ad is shown to a user. Frequency capping can be used to prevent users from becoming overloaded with ads.

FRICTION-Friction is the force that opposes the motion of one object against another. Friction can cause problems with usability or quality.

FUNNEL-A funnel is a marketing tool that is used to track the progress of potential customers through the sales process. The funnel can be used to measure the effectiveness of a marketing campaign.

IT Concepts with the Letter G

GAMIFICATION-Gamification is the use of game elements in non-game contexts. Gamification can be used to improve user engagement or motivation.

GEO TARGET-Geo target is the process of targeting ads to users based on their location. Geo target can be used to improve the relevance of ads.

GOAL-A goal is a desired result that a person or organization hopes to achieve. Goals can be short-term or long-term, and they can be specific or general.

GRP-GRP is the measure of the reach and frequency of an advertising campaign. GRP is often used to compare the effectiveness of different campaigns.

IT Concepts with the Letter H

HARD BOUNCE-A hard bounce is an email that is returned to the sender because the recipient’s address is invalid. Hard bounces can occur when an email address is misspelled or out-of-date.

HEADLINE-A headline is the text that appears at the top of an article or web page. Headlines are often used to attract attention and encourage people to read more.

HYPERLINK-A hyperlink is a link from one web page to another. Hyperlinks are often used to navigate between pages or to provide more information about a topic.

HIT – A hit is a request for a web page or file from a server. Hits are often used to measure the traffic of a website.

HTML – HTML is the code that is used to create web pages. HTML can be used to add structure, text, and images to a web page.

HYPERLINK – A hyperlink is a link from one web page to another. Hyperlinks are often used to navigate between pages or to provide more information about a topic.

IT Words with the Letter I

A poster with the word Internet

ID-The ID is a unique identifier for an object. IDs can be used to identify objects in a database or on a web page.

IMPRESSION-An impression is the number of times that an ad is seen by a user. Impressions can be used to measure the reach of an advertising campaign.

INBOUND LINK-An inbound link is a link from another website to your website. Inbound links are often used to improve the ranking of a website in search results.

IP-The IP address is a unique identifier for a computer or device on the internet. IP addresses can be used to identify the location of a user.

ISP-An ISP is an organization that provides access to the internet. ISPs can be used to provide internet service to users.

INTERNAL LINKING-An internal link is a link from one page on your website to another page on your website. Internal links are often used to improve the navigation of a website.

IN-HOUSE – In-house is the process of doing something within your own organization, rather than outsourcing it to another organization. In-house can be used to improve efficiency or to save money.

INCENTIVIZED AFFILIATES – Incentivized affiliates are websites that are paid to promote a product or service. Incentivized affiliates can be used to increase the visibility of a product or service.

INFographics – An info graphic is a graphic that contains information. Infographics can be used to communicate data or ideas in an easy-to-understand way.

INTERSTITIAL-An interstitial is a web page that appears between two other web pages. Interstitials can be used to display ads or to provide additional information.

INDEX – An index is a list of terms that are used to describe the content of a document. Indexes can be used to improve the search ability of a document.

INDEXING-Indexing is the process of adding terms to an index. Indexing can be used to improve the search ability of a document.

INFORMATION ARCHITECTURE-Information architecture is the process of organizing information. Information architecture can be used to improve the usability of a website.

INSTANT MESSAGE-An instant message is a message that is sent and received in real-time. Instant messages can be used to communicate with friends or colleagues.

INTERACTIVE MEDIA-Interactive media is a type of media that allows users to interact with the content. Interactive media can be used to improve the user experience of a website.

INTERNET-The internet is a global network of computers. The internet can be used to communicate, share information, and access services.

INTERNET MARKETING-Internet marketing is the process of promoting a product or service online. Internet marketing can be used to reach a large audience with minimal effort.

INTERNET SERVICE PROVIDER-An internet service provider is an organization that provides access to the internet. ISPs can be used to provide internet service to users.

INTERSITE LINKING-Intersite linking is the process of linking between websites. Intersite linking can be used to improve the visibility of a website in search results.

INTRANET-An intranet is a private network that is accessible only to an organization’s members. Intranets can be used to share information and resources within an organization.

IOS-iOS is a mobile operating system that is developed by Apple. iOS can be used to run iPhone and iPad apps.

ISDN-ISDN is a digital telephone service that uses a network of phone lines. ISDN can be used to provide high-speed internet access or to make phone calls.

ITERATIVE DESIGN-Iterative design is a type of design that involves making small changes to a design over time. Iterative design can be used to improve the usability of a website.

INDIE PROGRAM – The Indie Program is a program that helps independent developers to create and publish games. The Indie Program can be used to improve the visibility of indie games.

INFORMATION TECHNOLOGY-Information technology is the process of using computers to store, retrieve, and process data. Information technology can be used to improve the efficiency of an organization.

IT Words with the Letter J

JAVA-Java is a programming language that is used to develop software. Java can be used to create web applications or desktop applications.

JAVASCRIPT – JavaScript is a programming language that is used to develop websites. JavaScript can be used to create interactive web pages or to improve the usability of a website.

JOINT VENTURE-A joint venture is an agreement between two or more organizations to work together on a project. Joint ventures can be used to improve the efficiency of a project.

IT Vocabulary with the Letter K

Kbps- Kilo bits per second is a unit of measurement used to express data transfer speeds in a network. Kbps is equivalent to 1000 bits per second. Kbps means that 1000 bits of data are transferred each second.

Kerberos- Kerberos is a network authentication protocol. Kerberos is used to verify the identity of a user by using encrypted tickets.

Key- In cryptography, a key is a piece of information that is used to encrypt or decrypt data.

Kerning- Kerning is the process of adjusting the spacing between characters in a word. Kerning is a design technique used to make typography more attractive.

Kermit- Kermit is a terminal emulation program that allows you to log into remote computers and transfer files.

Keyword- In HTML, a keyword is an attribute name. For example, in the following tag, “src” is a keyword that specifies the source location of an image.

IT Vocabulary with the Letter L

Link- In HTML, a link is an active element in a web page that allows you to navigate from one place to another. Linking- Linking refers to the process of connecting two or more devices with each other so that they can communicate.

Link building- Link building is the process of acquiring links to your website. For example, you might write an article that features a link back to your site.

Link checker- A link checker is a program that scans your site for broken links.

Linux operating system- Linux operating system is an open-source operating system. It is free to use and it can be adapted to a wide variety of needs.

Log file- A log file is a record of an activity or events that occurred on a computer.

Log in password- This is a password that enables you to enter your account. It is often associated with an email address.

Log out- Logging out is the process of exiting or leaving a website or program on your computer. For example, when using Facebook, you must log out in order to leave the site.

IT Phrases with the Letter M

MAC operating system- This is an operating system developed by Apple which is used on the Macs. It is a proprietary operating system that can only be run on Apple computers.

Mac- This a short form for Macintosh, which is a line of personal computers made by Apple Incorporated.

Mail server- A mail server is a computer that sends and receives emails for other computers, another server or the Internet. Mail servers can be configured to deliver email to your email address.

Mail list- A mail list is an email list or distribution list. It is a group of people that share an interest in something and are subscribed to receive emails from that group automatically.

Mailing- This is sending a message to someone via email.

Macintosh- A computer made by Apple Incorporated. Many websites have pages that will not work properly on Macs.

Main page- The page on a website that first appears when you go to it.

MaaS- Mail As A Service. A mail service that provides email addresses with a fixed domain name that includes the sender’s name. MaaS is offered by some web hosting services.

IT Phrases with the Letter N

A Network Security Diagram

Network- A network is a group of connected computers. The connection can be wired or wireless.

Network interface card- A network interface card (NIC) is an expansion card that allows a computer to connect to a network.

Nameserver- A nameserver is a computer that resolves DNS queries from the Internet.

NAT- Network Address Translation (NAT) is a technology that allows private networks to be connected to the Internet. This can help hide the network’s IP address.

Network protocol- A network protocol is a set of rules and specifications that govern how computers communicate over a network.

Network Security- Network security is the measures taken to protect a network from unauthorized access.

Network sniffer- A network sniffer is a program that monitors data traveling across a network. It can be used for legitimate purposes, but is often used to steal passwords and other sensitive information.

IT Definitions with the Letter O

Online- A web site or service that is available to the public over the Internet.

Open source- A software program that is developed using open standards and that allows users to modify and distribute the software freely.

OpenType- OpenType is a format for scalable fonts created by Microsoft and Adobe Systems in 1995. The OpenType font format allows type designers to use the same font design data to create versions of the font that are optimized for screen display, print, or both.

OSI- Open Systems Interconnection is a set of reference model for network architectures and protocols.

On-Cloud- A software-as-a-service (SaaS) application that is hosted on a cloud computing platform.

Operating system (OS)- The operating system manages the computer and applications, including security settings and managing the file system.

OCR- Optical character recognition software is used to convert scanned or image copies of printed documents into editable text.

OSI- Open Systems Interconnection is a set of reference model for network architectures and protocols.

IT Definitions with the Letter P

PC- Personal Computer is a computer that is intended to be used by one person at a time.

PCI- Peripheral Component Interconnect is an expansion slot that allows you to add hardware devices, such as network cards and sound cards.

Platform- The combination of the hardware, operating system and applications that make up a computer.

PLC- Programmable Logic Controllers are used to monitor and control physical devices in industrial settings.

Plug-in- Software that is added to an existing application, usually for the purpose of extending or modifying its functions.

Page- The area of a computer screen that can be viewed at one time.

Paperless- A term used to describe a workplace or environment where paper documents are not used.

Packet- A group of data that has been bundled together for transmission.

Panel- A circuit board with numerous connectors that is used to interconnect hardware devices.

Password- A code that needs to be entered before a user can access a computer or application.

Putty- A software application that enables the user to connect to another computer or server through a modem.

IT Glossary Terms with the Letter Q

QoS- Quality of Service. A networking term used to describe a set of rules, parameters and/or components that define how network traffic should be handled.

QEI- Quality Excellence Initiative. Quality Excellence Initiatives are improvement programs designed to improve the quality of products or services.

QuickTime- A multimedia software application that allows files with the .mov format. It is used for audio and video content.

IT Glossary Terms with the Letter R

RAM- Random Access Memory. A computer’s short term memory that is used to store and retrieve data.

RAID- Redundant Array of Independent Disks. A storage technology that provides data protection against disk failures by duplicating data across multiple disks.

Remote backup- A backup of a computer’s data that is done from a remote location.

Remote control- A feature that allows users to operate their computer from another site.

Remote desktop- The capability of viewing and operating one computer’s desktop on another computer.

Registry- The central database for a computer’s configuration.

Resolution- The number of dots that display horizontally and vertically in the screen area.

Resume- A saved version of a document at any point during its creation.

Retina- An extremely high resolution display used on Apple computers.

ROM- Read-only memory is a special type of computer chip in which data can be read but not changed.

Root folder- A folder that contains all other folders in a directory structure.

Rotation- The ability to adjust the orientation of a monitor display from portrait to landscape.

IT Lexicon with the Letter S

Scroll bar- A moving bar that can be used to move quickly through a document.

Scrolling- The movement of text, graphics, or both on a computer screen.

Server- A computer that provides shared resources for other computers connected to it by a network.

SaaS- Software as a Service is a type of cloud computing in which the software runs on servers on the Internet. Security- The protection of data from unauthorized access and modification.

Security software- Software that protects computer systems from unauthorized access and modification. Security software usually includes encryption, authentication, firewalls, and virus scanning software.

Software- A set of instructions that a computer can understand in order to perform a particular task.

SATA- A type of data cable used to connect hard drives and other devices to a computer.

Safe mode- A Windows setting that prevents third-party software from running while the computer is starting.

Service- An application that runs in the background and performs a specific function, such as maintaining software or hardware.

Service pack- A collection of updates and fixes that is usually released on a regular schedule.

Settings- The options used to customize your computer’s performance.

IT Lexicon with the Letter T

Tech support- The process of providing assistance to computer users who have encountered problems with their computers.

Temporary file- A file that a program saves in order to complete a task and then deletes when it is no longer needed.

Terminal- A software program used by network administrators to configure network devices.

TCP/IP- An internet protocol suite used to create and manage a network. Technical support- Assistance by phone or e-mail from a company’s technical experts in the use of their products and services.

Thunderbolt cable- A type of cable used to connect peripherals such as monitors or external hard drives to a computer.

Thread- A line of a conversation in an e-mail or forum. It can also be used to refer to the sequence of steps that make up a process.

Table- A grid consisting of rows and columns. Typically used to organize data.

Tablet- A portable computer with a touch screen that is used for reading or writing. The user interacts with the device by touching the screen with a finger or stylus.

Trojan horse- A program that appears to be harmless but has malicious code hidden inside it.

IT Abbreviations with the Letter U

Unix- An operating system used primarily in servers and supercomputers that provides advanced features such as multitasking.

USB- (Universal Serial Bus) A type of peripheral connection port on a computer that is most commonly used to connect keyboards, mice, printers, external hard drives and other peripherals.

URL- (Uniform Resource Locator) The address of a website, file or other resource on the internet.

Upload- To transfer or send files from a local computer to a server. Uploading large files can take several hours or days.

Unicode- A standard used to encode text in a way that can be displayed by computers, regardless of the language or characters used. Used for languages with large character sets like Chinese, Japanese and Korean.

Utility- A program designed to perform a specific task (e.g., virus scanning, disk defragmentation). Utilities are usually small and can be used alongside other programs rather than being run as a stand-alone application.

Username- The user name or login ID that is used to log into a particular computer or network.

IT Abbreviations with the Letter V

Virus- A program that attaches itself to another program and spreads without the owner’s knowledge. It is also known as a malicious program (malware).

Virtual memory- A portion of the hard drive that is used to store data that would normally be stored in RAM, thus freeing up RAM for use by other programs.

VoIP- Voice over Internet Protocol. A technology that allows voice calls to be transmitted through the Internet. VoIP can be used in conjunction with a standard telephone line, or as a complete alternative to it.

VPN- Virtual Private Network. A private network that is created over a public network. VPNs provide security and privacy for network traffic that travels between two or more sites.

Virtual computer- A virtual computer is a virtual machine (VM) that has been spawned by another VM. For example, if you have a base VM and spawn two child VMs from it, then the base VM is a parent VM and the two child VMs are its children.

Virtual interface- A virtual interface is a virtual network adapter that has been attached to a virtual machine. A virtual machine can have a maximum of two virtual interfaces.

Virtual machine- A virtual machine is an emulation of a physical computer, also known as a host system.

IT Syntax with the Letter W

WiFi- WiFi is a wireless computer networking technology that allows electronic devices to communicate over a wireless local area network (WLAN).

WLAN- A wireless local area network is a computer network that uses radio waves to provide wireless high-speed internet and network connections.

WAIS- WAIS (Wide Area Information Server) is an information server that provides access to data over a TCP/IP network.

Warm site- A warm site is an alternative location for a business that has been designed for use by the business in the event of a disaster.

Windows- Windows are a set of graphical user interface (GUI) components that allow the interaction between users and computers.

Windows Server- Windows Server is an operating system produced by Microsoft for use on servers, allowing access to data and network resources.

Windows operating system- A Windows operating system, sometimes referred to as an OS, is a software package that provides the means through which users interact with their computers.

Windowing- Windowing is the process of dividing a screen into smaller windows, allowing multiple applications to be viewed simultaneously.

IT Syntax with the Letter X

Xerox- Xerox is a brand of copiers, printers, and other products produced by the American corporation Xerox Corporation.

XHTML- Extensible Hypertext Markup Language (XHTML) is a markup language used to create web pages and web applications.

XML- Extensible Markup Language (XML) is a markup language used for structuring and presenting data. XML is a subset of SGML, which stands for Standard Generalized Markup Language.

X2- X2 is a code name used by Apple for its next-generation PowerPC G5 microprocessor. X3- X3 stands for the third generation of a particular product, software or technology.

X-modem protocol- X-Modem is a file transfer protocol based on the ZMODEM method of modulation and error-handling.

IT Semantics with the Letter Y

Y2K- Year 2000 is a shorthand name for the year when the two digit years will be replaced with four digit years in computers. The abbreviation Y2K was first used in 1982. This problem is also called the “Millennium Bug”.

YAML- YAML stands for Yet Another Markup Language. It is a human readable data serialization language that was developed in 2001 by David A. Wheeler and Patrick R. Michaud.

IT Semantics with the Letter Z

Zip file- A Zip file is a computer file used to bundle multiple files together. The zip file uses the .zip extension and was developed by PKWARE Incorporated.

Z-modem- Z-Modem is a data protocol for sending binary files across a communication channel. It is an enhanced version of the X-modem protocol.

Zero-day- Zero day is a term used for the first day that a virus or worm is released into the wild. This means that there is no defense against it and it can spread freely around the internet.

Zip drive- A zip drive is a removable storage device that uses disks and was developed by Iomega. It is also known as the Jaz drive.

Zoom- To zoom is to magnify a picture on a computer. Zoom can be used with a mouse or a keyboard.

zShuffle- zShuffle is a file that you can use to select files from your hard drive by using random numbers.

Conclusion of IT Terms Glossary

In conclusion, this IT terms glossary has provided a comprehensive overview of many common IT terms. This should be a helpful resource for anyone who needs to brush up on their IT terminology.

However, this is just a starting point. There are many other IT terms out there and new ones are being created all the time. So, keep learning and stay up-to-date on the latest IT trends and vocabulary.

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