Your organization has signed an agreement with a web hosting provider that requires you to take full responsibility of the maintenance of the cloud-based resources. Which of the following models…

Platform as a Service (PaaS) abstracts the underlying infrastructure and runtime environment, so the provider manages the OS and middleware, leaving the customer responsible only for applications and data - not full infrastructure maintenance.

Software as a Service (SaaS) offloads nearly all maintenance to the provider, including infrastructure, platform, and the application itself, leaving the customer responsible only for user configuration and data.

Functions as a Service (FaaS) is a serverless execution model where the provider manages the entire underlying infrastructure, runtime, and scaling, requiring the customer to manage only the function code logic.

IaaS provides virtualized computing resources over the internet where the customer is responsible for managing and maintaining the operating systems, middleware, runtime, data, and applications, while the provider only manages the physical hardware, networking, and virtualization layer. This model gives customers the most control and the most responsibility, aligning with an agreement requiring full maintenance of cloud-based resources.