(ISC)2 Certified in Cybersecurity Practice Exam

For PaaS platforms, who is responsible for the application?

1. Vendor

2. Customer

3. Both vendor and customer

4. Neither

The correct answer is: Customer

In the context of Platform as a Service (PaaS), the customer retains the responsibility for the applications they develop and deploy on the platform. PaaS provides an environment that includes infrastructure management, operating systems, and middleware, while enabling customers to focus on developing applications without worrying about the underlying hardware and software layers. The customer is responsible for the entire lifecycle of the application, including its design, development, testing, deployment, and maintenance. They manage the application’s code and its functionalities, ensuring it meets their specific needs and complies with any necessary regulations or standards. The vendor, on the other hand, manages the underlying cloud infrastructure and the platform itself, ensuring that the environment remains stable, secure, and scalable. This division of responsibilities is a key characteristic of the PaaS model, emphasizing the customer’s role in application management while allowing them to take advantage of the vendor's platform efficiencies and tools.