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Basic Terms and Acronyms

A concise dictionary of key IT terms, acronyms and concepts used in programming, administration and internet services.

What are Basic Terms and Acronyms?

Basic terms and acronyms organize the language used in IT, from programming and system administration to domains, hosting, web applications and technical communication. Knowing them makes it easier to understand documentation, specifications, support requests and project discussions.

Definition and scope

This area covers the most commonly used technical terms, abbreviations and standard names, such as API, DNS, CMS, CLI, JSON, URL, MVP, TTL and TLD. It also includes software development concepts such as backend, frontend, framework, repository, debugging, refactoring, bug and component.

Role in IT projects

Precise understanding of terminology reduces the risk of communication errors between developers, administrators, analysts and clients. It matters when describing requirements, configuring services, managing domains, interpreting DNS records and working with applications, databases and interfaces.

Practical context

Terms such as A record, CNAME, MX, TXT, DNSSEC, DNS propagation, subdomain, webmail and whois appear in internet infrastructure maintenance. API, plugin, application, interface, JSON-LD and backlog are typical of product and software development work.

Keywords

Language versions

Alphabetical filter

Dictionary entries

54 results

Rekord A

Basic Terms and AcronymsEN

A Record

DNS A record, IPv4 address record

An A record in DNS maps a domain or subdomain to a server’s IPv4 address, allowing a browser to connect to the correct service.

Rekord AAAA

Basic Terms and AcronymsEN

AAAA Record

AAAA DNS Record

An AAAA record is a DNS entry that assigns an IPv6 address to a domain and directs traffic to a server supporting the modern Internet protocol.

Algorytm

Basic Terms and AcronymsEN

Algorithm

Computational procedure

An algorithm is an ordered set of instructions that solves a problem or performs a specific task in a repeatable and automatable way.

API

Basic Terms and AcronymsEN

API

Application Programming Interface

An API is a set of rules and tools that enables communication between applications, services and IT systems without direct access to their source code.

Aplikacja

Basic Terms and AcronymsEN

Application

Software application

An application is software designed to perform specific tasks. Learn about application types, how they work and their practical uses.

AuthInfo

Basic Terms and AcronymsEN

AuthInfo

AuthInfo code, EPP code, Auth-Code, domain transfer code, domain authorization code

AuthInfo is a confidential authorization code required to transfer a domain to another registrar. It confirms management rights and protects the domain against unauthorized transfers.

B2B

Basic Terms and AcronymsEN

B2B

Business to Business

B2B, or Business to Business, is a collaboration model in which one company offers products or services to another business. Learn how B2B works in IT, e-commerce and recruitment.

B2C

Basic Terms and AcronymsEN

B2C

Business to Consumer

B2C, or Business to Consumer, is a business model in which a company sells products or services directly to individual customers.

Backend

Backend, Basic Terms and AcronymsEN

Backend

Application back end

The backend is the server-side part of a website or application responsible for business logic, data processing, databases, security and integrations.

Backlog

Basic Terms and AcronymsEN

Backlog

Task list

A backlog is an organized list of tasks, features, requirements and fixes planned for a project, especially in Agile methodologies.

Bufor

Basic Terms and AcronymsEN

Buffer

Buffer memory

A buffer is a temporary memory area that stores data and synchronizes its transfer between processes, devices, or applications.

Bug

Basic Terms and AcronymsEN

Bug

Software bug

A bug is an error or defect in software that causes an application, system or service to behave unexpectedly. Finding and fixing bugs is an important part of software testing, maintenance and development.

C2C

Basic Terms and AcronymsEN

C2C

Consumer to Consumer

C2C, or Consumer to Consumer, is a commerce model in which consumers sell goods or services directly to other consumers through online platforms.

Rekord CAA

Basic Terms and AcronymsEN

CAA Record

Certification Authority Authorization

A CAA record in DNS specifies which certificate authorities may issue TLS certificates for a domain, reducing the risk of unauthorized certificate issuance.

CLI

Basic Terms and AcronymsEN

CLI

Command Line Interface, command-line interface

CLI, or Command Line Interface, is a text-based interface for managing systems, applications, and servers through commands entered in a terminal.

Rekord CNAME

Basic Terms and AcronymsEN

CNAME Record

Canonical Name, DNS alias

A CNAME record is a DNS entry that creates an alias for a domain name and points it to another canonical name instead of directly to an IP address.

Kompilacja

Basic Terms and AcronymsEN

Compilation

Source code translation

Compilation is the process of transforming source code into a form executable by a computer, such as machine code, bytecode or application output files.

Komponent

Basic Terms and AcronymsEN

Component

Module, system element

A component is an independent element of a larger system that performs a specific function and can work with other modules.

Baza danych

Basic Terms and Acronyms, DatabasesEN

Database

DB, database system

A database is an organized collection of information that can be efficiently managed, searched and securely updated through a DBMS.

Debugowanie

Basic Terms and AcronymsEN

Debugging

Debugging

Debugging is the process of detecting, analysing and fixing errors in programs, applications and websites.

DNS

Basic Terms and AcronymsEN

DNS

Domain Name System, domain name system

DNS translates human-friendly domain names into IP addresses and directs traffic to the correct servers, services and mailboxes.

Propagacja DNS

Basic Terms and AcronymsEN

DNS Propagation

DNS record updates

DNS propagation is the process of distributing changes to domain records across DNS servers and resolver caches worldwide.

DNSSEC

Basic Terms and Acronyms, SecurityEN

DNSSEC

Domain Name System Security Extensions

DNSSEC extends DNS with digital signatures that verify the authenticity and integrity of domain records, reducing the risk of forged DNS responses.

Cesja domeny

Basic Terms and AcronymsEN

Domain Assignment

Transfer of domain rights

Domain assignment is the formal change of a domain subscriber, transferring the rights and obligations connected with a domain to another person, company or organisation.

Basic Terms and AcronymsEN

DW

For your information, CC, Carbon Copy

DW is an email field used to send a copy of correspondence to people who should know its contents but are not the primary recipients.