Great Expectations

Great Expectations is a data validation framework that helps organizations ensure their data is accurate, consistent, and reliable. It allows users to define "expectations" or rules about how data should look—such as value ranges, formats, or patterns—and then automatically checks if the data meets these standards. This process helps identify issues early, maintain data quality, and supports better decision-making. Ultimately, Great Expectations provides transparency and confidence in data pipelines by systematically verifying data against predefined expectations.