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OAuth is an open standard for access delegation, commonly used as a way for Internet users to grant websites or...

Object-Oriented Programming (OOP) is a programming paradigm based on the concept of “objects”, which can contain data, in the form...

Off-canvas Menu refers to a navigation menu hidden out of the visible browser window and can be transitioned into view...

Omnichannel refers to a multichannel sales approach that provides the customer with an integrated shopping experience. The customer can be...

On-demand services are those made available to users as needed. This can refer to media streams, software, or services accessed...

Onboarding in the digital context refers to the process of introducing new users to an application or website and getting...

Opacity in web design controls the transparency level of an element. It can range from completely transparent (0%) to fully...

Opcode (operation code) is the portion of a machine language instruction that specifies the operation to be performed. Beyond just...

Opcode Cache improves PHP performance by storing precompiled script bytecode in shared memory, thereby removing the need for PHP to...

Open Graph is a protocol that allows developers to integrate web pages into the social graph. These pages gain the...

Open Source refers to software for which the original source code is made freely available and may be redistributed and...

Operating System (OS) is software that manages a computer’s hardware and software resources and provides common services for computer programs....

Optimization in web development involves refining a website to improve speed and performance. This can include techniques like minimizing code,...

ORM (Object-Relational Mapping) is a programming technique used to convert data between incompatible type systems in object-oriented programming languages. This...

Outbound Link refers to links from one website to a different website. These are used in content to cite sources,...

Outsourcing involves hiring third parties to perform services that might traditionally be performed by in-house employees. This is often done...

Over-the-air (OTA) technology allows the distribution of software updates, configuration settings, and other data to devices like smartphones and tablets...

Overflow in CSS deals with what happens if content is too big to fit into a box. CSS provides various...

Overlay refers to a graphical layer that is placed over existing content on the screen. It is often used in...

Overloading, in programming, allows the creation of several methods with the same name which differ in the type or number...

Override in programming refers to a feature that allows a subclass or child class to provide a specific implementation of...