Splunk dashboards use tokens to capture and pass contextual values between dashboard elements, user interactions, and drilldown destinations. Therefore, tokens are the mechanism an engineer can use when a user selects a visualization element and the resulting value must be inserted into another search.
A token can represent contextual information derived from an interaction—for example, a selected host, username, source IP, destination, process, or time range. A drilldown can then use that value to construct a more focused search. Conceptually, a dashboard could capture a selected src value and pass it to a destination search so the analyst moves directly from an aggregate visualization to events associated with that source.
This design improves investigation efficiency because the analyst does not need to manually copy values from one interface into another search. It also preserves analytical context as the user moves from summary information to detailed evidence.
Aliases concern alternate representations of fields; environment variables are not the standard dashboard mechanism for passing selected visualization context; and JSON may define dashboard structures but is not itself the contextual-value mechanism being tested.
Study Guide topics: dashboard tokens, drilldowns, contextual searches, analyst workflow, dashboard interactivity, investigation efficiency.