(ISC)2 Certified in Cybersecurity Practice Exam

Which cloud service category allows customers to buy an entire application?

1. IaaS

2. PaaS

3. SaaS

4. TaaS

The correct answer is: SaaS

The correct choice is SaaS, which stands for Software as a Service. This cloud service model provides customers with access to fully developed applications that are hosted on the cloud. Users can utilize the software over the internet, typically through a web browser, without needing to install or manage the application locally on their devices. SaaS offerings often include features such as automatic updates, maintenance, and scalability, making them highly convenient for end-users. In contrast, IaaS (Infrastructure as a Service) primarily involves providing virtualized computing resources over the internet. This allows customers to manage their own applications and data on shared infrastructure without needing to buy physical hardware. PaaS (Platform as a Service) gives developers a platform to build, test, and deploy applications over the internet. While PaaS includes capabilities for application development, it does not provide complete end-user applications; rather, it focuses on the development environment. TaaS (Testing as a Service) is less common and specifically refers to outsourcing software testing tasks to a third-party service provider. It does not cater to the procurement of entire applications. In summary, SaaS is the only model that directly allows customers to purchase and use whole software applications, making it distinct from the other cloud service categories