Palo Alto Networks (PANW) Certified Cybersecurity Entry-level Technician (PCCET) Practice Exam

The model in which applications rely on managed services that abstract away the need to manage, patch, and secure infrastructure and virtual machines is known as Serverless computing. In this model, developers can focus on writing code without worrying about the complexities of the underlying infrastructure. Serverless computing allows developers to deploy their code as functions that run in response to events, and the cloud provider automatically handles the server management, scaling, and security.

This abstraction means that developers do not have to deal with virtual machines or the underlying operating system, thus minimizing operational overhead. Serverless architectures also enhance agility since they allow developers to quickly deploy and iterate on applications without the burden of server maintenance, patching, or capacity planning.

In contrast, other models like Software as a Service (SaaS) involve software delivery over the internet but do not provide the same level of abstraction for application development. Platform as a Service (PaaS) provides a platform for developers to build applications but still requires some management of the underlying infrastructure, and Containers involve packaging applications with their dependencies but still require oversight regarding the orchestration and management of those containers. Serverless stands out as the model that fully abstracts away these infrastructure management tasks, enabling a more focused and efficient development process.