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Glossary

This glossary provides concise definitions for some of the key concepts within Flagsmith:

  • A/B Testing: A method of testing different feature variants with different user groups, often implemented using multivariate flags and percentage splits.

  • Core API: Flagsmith's private API for programmatic control of the platform.

  • Edge API / Edge Proxy: Flagsmith's publicly accessible API, specifically intended for use with our SDKs.

  • Environment: Environments are a way to separate the configuration of your features. A project can have any number of environments.

  • Environment Document: A JSON document containing all configuration for feature flags in an environment.

  • Feature: A configuration that can be enabled, disabled, or set to a specific value. Features are shared across all Environments in a project, but their values/states can be modified between Environments.

  • Feature Flag: A boolean or multivariate switch to enable/disable features or set their values dynamically without deploying code.

  • Identity: An identity represents a specific user within a particular environment. Identities allow you to manage and override feature settings for individual users, and the same user can have different features enabled in different environments.

  • Local Evaluation Mode: A mode where the SDK evaluates feature flags locally using a downloaded environment document, reducing latency and API calls.

  • Multivariate Flag: A feature flag that can take on multiple values (not just on/off), useful for A/B testing and gradual rollouts.

  • Organisation: Organisations are a way for you and other team members to manage projects and their features. Users can be members of multiple organisations.

  • Project: Projects contain one or more Environments that share a single set of Features across all of the Environments within the Project. Organisations can have any number of Projects.

  • Role-Based Access Control (RBAC): A system for managing user permissions and access within an organisation.

  • SDK (Software Development Kit): Client libraries provided by Flagsmith for integrating feature flagging into applications.

  • Segment: A group of users defined by traits (e.g., logins, device, location, or custom traits). You can override feature defaults for segments, such as enabling features for a "power user" group.

  • Staged Rollout: Gradually enabling a feature for increasing percentages of users to reduce risk.

  • Trait: A key-value pair associated with an identity that can store any type of data.