Amazon macie is a fully managed data security and data privacy solution that discovers and protects sensitive data in aws using machine learning and pattern matching. Identifying and preserving sensitive data at scale may become increasingly hard, costly, and time consuming as businesses handle increasing amounts of data. Amazon macie automates the detection of sensitive data at scale, lowering the cost of data protection. Macie automatically gives an inventory of amazon s3 buckets, including a list of unencrypted buckets, buckets that are publicly available, and buckets shared with aws accounts other than those you have designated in aws organizations. Then, macie uses machine learning and pattern matching techniques to detect and alert you to sensitive material, such as personally identifying information, in the buckets you choose (pii). Simply amazon macie is a security service which uses machine learning (ml) and natural language processing (nlp) to discover, classify and protect sensitive data stored in s3.