Glossary

An experiment that compares two or more variants of a page or feature to determine which performs better.

A website visitor who has not been identified, tracked using a randomly generated anonymous ID.

The percentage of visitors who leave your site after viewing only one page without any further interaction.

A deployment strategy that releases changes to a small subset of users or servers before full rollout.

The percentage of users or subscribers who stop using your product within a given time period.

A technique that groups users by shared characteristics or time periods to compare behavior patterns over time.

The system and processes for collecting, storing, and respecting user consent for data collection and tracking.

The percentage of users who complete a desired action out of the total number who had the opportunity.

An analytics approach that tracks user behavior without storing cookies in the user's browser.

A developer-defined analytics event that captures a specific user action beyond automatically tracked interactions.

The principle that data is subject to the laws of the country or region where it is stored or processed.

The ratio of daily active users to monthly active users, indicating how often users engage with your product.

A click on an element that produces no visible response or navigation, suggesting a UX issue.

The process of recording specific user interactions and actions within a website or application for analysis.

A toggle that enables or disables a feature in your application without deploying new code.

Another name for a feature flag — a mechanism to turn features on or off without code changes.

A computed metric that quantifies user frustration based on signals like rage clicks, dead clicks, and error encounters.

A method of analyzing the sequential steps users take toward a goal, identifying where they drop off.

The General Data Protection Regulation — EU law governing how organizations collect, store, and process personal data.

A release strategy where a feature is incrementally released to larger percentages of users over time.

The process of merging multiple anonymous and identified user records into a single unified user profile.

A feature flag used to instantly disable a feature in production without deploying new code.

An open standard for feature flag management that provides a vendor-agnostic API for evaluating feature flags.

A recorded instance of a user loading or viewing a specific page in a website or application.

A feature flag targeting strategy that enables a feature for a specific percentage of users.

Repeated rapid clicks on the same element, indicating user frustration with an unresponsive interface.

The URL or source that directed a user to your website, indicating where your traffic comes from.

The percentage of users who return to your product after their first visit within a given time period.

A group of user interactions within a given time frame, representing a single visit to your website or app.

A visual playback of a user's session, showing exactly what they saw and did in your application.

The process of monitoring and recording user sessions to understand visit-level behavior and engagement.

The process of associating analytics data with a known user identity, linking anonymous activity to a real person.

The ability to enable or disable features for specific users based on their attributes or segments.

Tags added to URLs that identify the source, medium, and campaign driving traffic to your site.