Gherkin

A business-readable domain-specific language for defining software behavior without detailing implementation.

Gherkin serves as the foundational syntax for the Cucumber framework, utilizing a structured set of keywords like Given, When, and Then to bridge the gap between technical teams and stakeholders. It enforces a standardized format for executable specifications, allowing teams to automate functional tests while maintaining a human-readable living documentation. By organizing requirements into Feature files and Scenarios, Gherkin eliminates ambiguity in the development lifecycle and ensures that 100% of the project requirements remain verifiable through plain-text scripts.

https://cucumber.io/docs/gherkin/