Pigment ink is an inkjet ink made of fine colorant particles suspended in liquid, valued in photo printing for fade resistance and…
PII, personally identifiable information, is any data that can identify a specific person on its own or when linked with other available…
A pillar page is a comprehensive hub page that covers a broad topic and links to detailed cluster articles, organizing content for…
PIM, or product information management, is the system and practice of centralizing, enriching and distributing product data to every sales channel.
Pitch shifting is an audio effect that raises or lowers the pitch of a sound by a set interval, usually without changing…
Pixel density measures how many pixels a display packs into each inch, usually in PPI, and determines how sharp text and images…
Pixel pitch is the center-to-center distance between neighboring photosites on an image sensor, stated in micrometers, and it shapes resolution and noise.
PKI, or public key infrastructure, is the system of certificate authorities, certificates and policies that binds public keys to verified identities.
PlayStation 5 is the ninth-generation Sony home console, built around a custom AMD processor, a fast SSD and the DualSense controller with…
Playwright is an open-source browser automation framework for end-to-end web testing across Chromium, Firefox and WebKit from a single API.
Plesk is a commercial web hosting control panel for Linux and Windows servers that manages websites, domains, email, DNS, databases and SSL…
PLG, or product-led growth, is a SaaS strategy in which the product itself drives customer acquisition, conversion and expansion.
Plugin architecture is a software design in which a stable core application loads separately built extensions through defined interfaces.
PM2 is a process manager for Node.js that keeps applications running, restarts them after crashes, runs cluster mode and manages logs on…
A pod is the smallest deployable unit in Kubernetes: one or more containers that share a network identity, storage volumes and a…
A podcast is a series of digital audio episodes published through an RSS feed so that listeners can subscribe and receive new…
Podcast hosting is the service that stores podcast audio files, generates the RSS feed and delivers episodes to apps and directories worldwide.
PoE (Power over Ethernet) delivers DC power and data over the same twisted-pair cable, powering access points, cameras and phones from a…
A point cloud is a set of 3D points sampled from surfaces, which robots use in perception to map scenes, detect obstacles…
Point-in-time recovery restores a database to its exact state at a chosen moment by replaying transaction logs on top of an earlier…
A point of presence is a physical site where a CDN or network places servers and interconnects with other networks to serve…
A polar pattern describes how sensitive a microphone is to sound arriving from different directions, from omnidirectional to cardioid and figure-8.
Polling is an integration technique in which a system repeatedly asks another system at intervals whether new or changed data exists, then…
Polymorphism in object-oriented programming lets one interface work with objects of different types, each responding to the same call in its own…
POP3 is the Post Office Protocol version 3, a simple email retrieval protocol that downloads messages from a mailbox server to one…
A port number is a 16-bit identifier in TCP and UDP headers that directs transport-layer traffic to the correct application on a…
Portrait photography is the genre of photography that depicts a person or group so their appearance, character or mood becomes the main…
Pose estimation in computer vision locates the keypoints and orientation of people or objects in images and video to describe their posture…
POST, the power-on self-test, is the firmware routine that checks and initializes the processor, memory and key hardware before a computer loads…
PostgreSQL is an open-source object-relational database system known for strict SQL compliance, MVCC concurrency, rich data types and extensibility.
Power Automate is Microsoft's low-code automation platform that links cloud services, data and desktop applications through triggered flows.
PowerShell is the object-based command-line shell and scripting language for automating and managing Windows systems, built on .NET.
A PPA, or Personal Package Archive, is a third-party APT repository on Launchpad that delivers extra or newer packages for specific Ubuntu…
PPC, or pay-per-click, is a digital advertising model in which the advertiser pays each time a user clicks an ad, usually with…
PPI (pixels per inch) states how densely a digital image's pixels are mapped onto paper or a screen, which sets print size…
PPTX is the XML-based presentation file format of Office Open XML, storing slides, layouts, media and notes in a single ZIP package…
PQ, the perceptual quantizer, is the absolute HDR transfer function that maps video code values to brightness levels of up to 10,000…
PR, or public relations, is the strategic management of communication between an organization and its publics to build trust, reputation and goodwill.
Pre-seed is the earliest outside funding stage of a startup, used to build a first product and find early evidence of demand.
Precision in model evaluation is the share of a model's positive predictions that are actually correct, measuring how trustworthy its positive alerts…
Predictive analytics uses historical data, statistical models and machine learning to estimate future outcomes and guide business decisions in analytics.
A presigned URL is a time-limited, signed address that grants temporary access to one object in cloud storage without sharing credentials.
A press kit is a ready-made package of facts, images and contacts that lets journalists report on an organization quickly and accurately.
A press release is an official written announcement that an organization issues to journalists to share newsworthy information in public relations.
Pressure stall information (PSI) is a Linux kernel metric showing how much time tasks lose waiting for CPU, memory or I/O resources.
PrestaShop is an open-source, self-hosted e-commerce platform written in PHP that merchants install on their own server and extend with modules and…
Pretraining is the first, largest stage of model training, in which a neural network learns general patterns from vast unlabeled data before…
A pricing tier is one packaged level of a software product, with its own price, features and usage limits, offered beside other…
A primary key is the column or set of columns that uniquely identifies each row in a database table and cannot contain…
Primary-replica is a database replication model in which one primary server accepts all writes and streams its changes to read-only replica copies.