Machine learning plays a critical role in fraud detection across various industries, with feature stores being pivotal in enhancing this capability. Feature stores serve as a bridge between raw data sources and machine learning models, facilitating the extraction, transformation, and storage of real-time and historical features necessary for model training and compliance. Within a machine learning platform, feature stores are structured with a registry defining feature names and types, an ETL process for data ingestion, and online and offline storage for low-latency queries and bulk data handling, respectively. Monitoring and observability systems are integrated to detect issues like feature drift, ensuring data quality. For fraud detection, feature stores can integrate with streaming and batch data sources, such as Kafka for real-time transaction data and Snowflake for historical data, to compute features like risk scores and transaction statistics. By enabling efficient querying and computing of feature values, feature stores support real-time inference and model training, thus aiding in the development and deployment of sophisticated fraud risk models. The use of feature stores not only enhances model accuracy and efficiency but also promotes collaboration and scalability in machine learning applications.