"PaaS" stands for Platform as a Service in cloud service models. PaaS provides a scalable and flexible environment for developers to build, test, and deploy applications without worrying about underlying infrastructure management. This service model typically includes tools for software development, database management, and application hosting, allowing for a more efficient development process. By leveraging PaaS, organizations can focus on coding and application functionality rather than maintenance tasks related to hardware and operating systems, leading to faster innovation and reduced costs.