Cucumber is a user-friendly tool used for behavior-driven development (BDD) in software testing. In other words, it helps teams collaborate and create tests based on the expected behavior of a system. Cucumber uses a plain-text format called Gherkin, making it easy for non-technical stakeholders to understand and contribute to the testing process. It acts as a bridge between technical and non-technical team members to promote effective communication. With Cucumber, tests are written in a human-readable language to increase clarity and transparency in the testing process. This tool supports various programming languages to enhance versatility for different projects. In essence, Cucumber is a valuable asset for teams aiming to align development and testing efforts, fostering a shared understanding of software behavior.