# Variables ## Introduction: Variables in JENTIS In JENTIS, **variables** serve as the foundation for collecting, transforming, and transmitting data throughout the tracking system. They represent individual data points — such as user attributes, technical parameters, or campaign information — that can be dynamically accessed and reused across tags, triggers, and data layers. JENTIS variables are organized into different **scopes**, including: * **Client-Side Variables** – Data directly from the browser (e.g., User-Agent, screen size) * **Server-Side Variables** – Data persisted on the backend * **Constants** – Manually defined values used across your setup * **Enrichment Variables** – Data handled or enriched by a third-party resource on the backend (e.g., IP geolocation, device resolution enrichment, product ID enrichment, etc.) This modular and flexible system allows you to build powerful tracking setups, maintain clean logic, and ensure data quality across all tracking channels. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.jentis.com/developer-guide/variables.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.