9. Which cloud computing service model allows customers to run their own application code without configuring the server environment?
Answer: A
Platform as a service (PaaS)
Platform as a service (PaaS) allows customers to run their own application code without the need to manage the underlying server infrastructure. This model provides a platform that includes both hardware and software tools over the internet, enabling developers to build and deploy applications efficiently.
A) Platform as a service (PaaS)
This option is correct because PaaS offers a managed environment where customers can focus solely on developing and deploying applications without worrying about server configuration or maintenance. It provides the necessary infrastructure, runtime environment, and middleware, simplifying the development process.
B) Software as a service (SaaS)
SaaS is not the correct answer as it delivers software applications over the internet on a subscription basis, eliminating the need for installations or maintenance by users. However, users do not have the capability to run their own application code; they can only use the software as provided.
C) Data science as a service (DSaaS)
DSaaS is a specialized service model that focuses on providing data science resources and tools, but it is not as widely recognized as PaaS. Even if it allows users to analyze data, it does not primarily serve as a platform for running custom application code like PaaS does.
D) Infrastructure as a service (IaaS)
IaaS provides virtualized computing resources over the internet, but it requires users to manage and configure their own server environments. This means that while users can run their applications, they must handle server setup, which contradicts the question's requirement of not configuring the server environment.
Conclusion
Platform as a service (PaaS) is definitively the correct answer as it allows users to focus on application development without server management concerns. In contrast, SaaS, DSaaS, and IaaS require various levels of user involvement in server configuration or do not provide the same level of control over application code, making them unsuitable for the question's criteria.