Hadoop in cloud computing involves leveraging Hadoop’s robust data processing features in a cloud setting. It enables businesses to store and analyze large datasets without the requirement of operating their own physical hardware. Cloud service providers deliver Hadoop as a service, simplifying the setup and scalability process. This merges Hadoop’s capacity for big data handling with the cloud’s adaptability and affordability. In essence, it facilitates big data processing that is both accessible and scalable through cloud infrastructure.