NoSQL databases offer several advantages over traditional relational databases, particularly when handling large volumes of unstructured data. They provide flexibility in data models, allowing for rapid schema changes without downtime. NoSQL databases are known for their high scalability, enabling horizontal expansion as data grows. They also exhibit improved performance for specific queries due to their distributed architecture. Additionally, NoSQL solutions often support various data types, making them suitable for modern applications that require fast data retrieval and real-time processing.