grunt-contrib-watch automates repetitive tasks by monitoring your project's files and triggering predefined Grunt tasks whenever changes occur. Ideal for streamlining web development workflows, it observes files for modifications, additions, or deletions. Upon detection, it executes specified Grunt tasks, such as linting, minifying, or testing, providing instant feedback. This continuous integration-like process boosts productivity and ensures code quality by detecting issues early. Configuration allows customization for specific file patterns and task executions.