What is the specification designed to facilitate application management in PaaS systems?

The specification designed to facilitate application management in Platform as a Service (PaaS) systems is known as CAMP, which stands for Cloud Application Management for Platforms. This specification aims to provide a standardized way to manage applications hosted on cloud platforms, addressing aspects such as deployment, lifecycle management, and maintenance of cloud applications. By using CAMP, developers can obtain interoperability and automation capabilities within PaaS environments, allowing them to manage applications effectively across different cloud providers.

In contrast, the other concepts like vertical cloud computing, cloud provisioning, and cloud server hosting pertain to different aspects of cloud computing rather than directly addressing application management in a PaaS context. Vertical cloud computing focuses on industry-specific applications, cloud provisioning relates to the allocation and management of cloud resources, and cloud server hosting involves maintaining server infrastructure in the cloud. None of these specifically target the management of applications in a way that CAMP does.