Distortion in audio effects is the deliberate nonlinear reshaping of a waveform that adds harmonics, compression and grit to a sound.
A distributed ledger is a database of transactions replicated across many independent nodes that agree on its contents without relying on one…
Distributed tracing follows a single request across services and records each step as timed spans, revealing where latency and errors arise.
Distributed training splits the training of a machine learning model across many GPUs or nodes so that larger models and datasets can…
Dither in digital audio is low-level noise added before reducing bit depth so quantization error becomes benign noise instead of distortion.
DKIM is an email authentication method that signs messages with a domain key so receivers can verify the sender domain and detect…
DLSS (Deep Learning Super Sampling) is an NVIDIA graphics setting that renders games at lower resolution and upscales them with AI to…
The DMA, or Digital Markets Act, is an EU regulation that imposes ex ante obligations on gatekeeper platforms to keep digital markets…
A DMA gatekeeper is a large platform company designated under the EU Digital Markets Act and bound by fixed conduct rules for…
DMARC is an email authentication policy that aligns SPF and DKIM with the visible From domain and tells receivers how to handle…
DNF is the high-level package manager of Fedora and RHEL-based Linux systems, resolving dependencies and installing RPM packages from repositories.
DNS, the Domain Name System, is the distributed, hierarchical directory of the Internet that translates domain names into IP addresses and other…
DNS propagation is the delay before a changed DNS record is seen everywhere, as resolver caches expire according to TTL values and…
A DNS resolver is the client-side component of DNS that turns domain names into IP addresses by querying name servers and caching…
A DNS zone is a delegated part of the domain name space managed as one unit, with its own records, authoritative servers…
DNSSEC is a set of DNS security extensions that adds digital signatures to DNS records so resolvers can verify that answers are…
DNxHR is Avid's family of intra-frame video codecs for editing and finishing at resolutions above HD, from proxy quality up to 12-bit…
Docker is a platform for building, sharing and running containers, packaging an application with its dependencies into a portable, isolated image.
Docker Compose defines and runs multi-container applications from one YAML file, starting services, networks and volumes together on a single host.
A Dockerfile is a text file of ordered build steps that defines how a container image is assembled layer by layer from…
A document database is a NoSQL database model that stores each record as a self-describing document, usually JSON or BSON, with a…
DOCX is the default word processing file format of modern office applications, a ZIP package of XML parts standardized as Office Open…
Dolby Atmos is an object-based spatial audio format that places sounds in three-dimensional space, including overhead, and renders them to any speaker…
Dolby Vision is a proprietary HDR video format that combines PQ encoding with dynamic, scene-by-scene metadata to tone map content for each…
A dolly shot is a camera movement in which the camera travels on a wheeled platform, moving physically toward, away from or…
The DOM, or Document Object Model, is the live tree of objects a browser builds from HTML so scripts can read and…
Domain Authority (DA) is a third-party SEO metric from 1 to 100 that predicts how likely a website is to rank, based…
A domain name is a unique, human-readable identifier in the Internet's DNS hierarchy, registered for a fixed term and used to address…
Domain randomization is a robot simulation technique that varies physics, visuals and sensor noise during training so learned models work on real…
DORA, the EU Digital Operational Resilience Act, requires financial entities to manage ICT risk, report major incidents and oversee ICT providers.
Double opt-in is an email marketing sign-up method in which a new subscriber confirms the address by clicking a link before receiving…
A DPA, or data processing agreement, is the contract that governs how a SaaS vendor processes personal data on behalf of its…
DPI, or dots per inch, measures how many ink or toner dots a printer places along one inch, which shapes tonal smoothness…
A DPIA, or data protection impact assessment, is the GDPR process for assessing and reducing high privacy risks of planned personal data…
dpkg is the low-level Debian package manager that installs, removes and tracks .deb files on Debian and Ubuntu Linux systems, without resolving…
DPO, or direct preference optimization, trains a language model on pairs of preferred and rejected answers without a separate reward model or…
A drip campaign in email marketing is a prewritten series of automated emails sent on a schedule or after triggers to guide…
Driver signing is an OS security control that lets only digitally signed, verified device drivers load into the kernel of a desktop…
Dropshipping is an e-commerce fulfillment model in which the retailer sells products it does not stock, and the supplier ships each order…
The DSA, or Digital Services Act, is the EU regulation that sets layered due diligence duties for intermediaries, online platforms and very…
A DSAR, or data subject access request, is a person's formal request to learn what personal data an organization holds about them…
DTC in e-commerce means direct-to-consumer: a model in which a brand sells its own products straight to end customers without retail intermediaries.
Dual boot is a setup in which two operating systems are installed on one computer and the user chooses which one to…
Dual native ISO is a video camera sensor design with two analog gain circuits, giving two low-noise base sensitivities for bright and…
Duplicate content is identical or very similar content available at more than one URL, forcing search engines to choose which version to…
A dynamic IP address is assigned automatically for a limited time, usually by DHCP, and may change, which simplifies address configuration on…
A dynamic microphone converts sound into an electrical signal through a diaphragm-driven coil moving in a magnetic field, needing no external power.
Dynamic range in photography is the span between the brightest and darkest tones a camera can record with detail, usually measured in…
Dynamic range compression in mastering reduces the level difference between loud and quiet parts of a mix to control density, consistency and…
Dynamic routing is a routing method in which routers exchange information through routing protocols and update their routing tables automatically.