A CASB (Cloud Access Security Broker) is a security solution that helps protect data stored in cloud services. It monitors and enforces policies to ensure the safety of any data going in, out and within cloud applications. By using machine learning and analytics, it detects risky behavior and blocks suspicious activities. This provides an extra layer of protection, allowing businesses to maintain compliance while providing secure access to cloud applications. With a CASB, you can control who accesses your apps, what they can do with them and when they can do it from anywhere.