A/B Testing
A/B testing is a controlled experimental method in which users are assigned to different variants so researchers or product teams can compare outcomes under defined conditions.
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A/B testing is a controlled experimental method in which users are assigned to different variants so researchers or product teams can compare outcomes under defined conditions.
Acceptance criteria are agreed conditions used to determine whether a requirement, user story, feature, or service change has been implemented sufficiently for acceptance.
Accessibility is the practice of making digital products, content, and services usable by people with diverse abilities and assistive needs.
Accessibility governance is the set of responsibilities, standards, processes, reviews, and accountability mechanisms used to ensure that accessibility is maintained across design, conten...
Accessibility regression is the reintroduction or creation of accessibility barriers after a design, content, code, component, or release change.
An accessible name is the programmatically determinable label or text alternative that assistive technologies use to identify a user interface element.
Activation is the point at which a user reaches an early meaningful value, readiness state, or capability that indicates they can begin using a product or service effectively.
Adoption is the meaningful uptake and use of a product, service, system, or practice by intended users in a real context.
An adoption barrier is a factor that prevents, delays, discourages, or limits people from starting or continuing to use a product, service, system, or workflow.
Affordance refers to what an object, interface, or environment makes possible for action, and in interaction design often includes how available actions are perceived by users.
AI transparency is the visibility and understandability of when, where, and what role artificial intelligence plays in a product, service, decision, workflow, or user interaction.
Algorithmic accountability is the responsibility, governance, documentation, reviewability, and answerability around algorithmic or automated systems that influence service decisions, use...
Alternative text is text that communicates the purpose or meaning of an image or non-text element when the visual content cannot be seen, loaded, or understood.
An appeal path is a designed route through which users can challenge, correct, review, or request reconsideration of a decision, rejection, restriction, penalty, or service outcome.
Assistive technology is hardware, software, equipment, or a system feature that helps people with disabilities or functional limitations access, understand, operate, or communicate with d...
Assumption mapping is the process of identifying, organizing, and prioritizing unverified beliefs that influence a product, service, research, or design decision.
An automated decision is a decision made by, or materially supported by, an automated system, algorithm, or AI-supported process, including both solely automated decisions and automated-a...
Automation bias is the tendency for people to over-rely on, accept, or follow automated system outputs even when those outputs may be wrong, incomplete, or inappropriate.
Backstage refers to the staff actions, systems, data flows, policies, approvals, rules, and operational processes that users may not see but that enable or constrain the visible service e...
Behavioral analytics is the collection and analysis of user interaction data to understand how people move through, use, abandon, repeat, or complete tasks in a digital product or service.
A benchmark task is a repeatable task used to measure usability or experience performance consistently across designs, releases, products, or time periods.
A business requirement is a statement of an organizational, operational, policy, compliance, financial, or strategic need that a product, service, or system must satisfy.
Card sorting is a research method in which participants organize items into groups so researchers can study how people understand relationships among content, tasks, or concepts.
Case management is the coordinated handling of an individual case through ownership, status tracking, records, decisions, staff action, support, escalation, and outcome management.