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What type of service is characterized by delivering software applications over the Internet?

  1. IaaS

  2. Platform as a Service (PaaS)

  3. Software as a Service (SaaS)

  4. Infrastructure as a Service (IaaS)

The correct answer is: Software as a Service (SaaS)

The correct answer is Software as a Service (SaaS) because this model specifically involves delivering software applications over the Internet to users. SaaS applications are hosted in the cloud and are accessible via a web browser, eliminating the need for users to install and maintain software on their local devices. This model allows users to easily access the software from anywhere with an internet connection, providing flexibility and convenience. The characteristics of SaaS include multi-tenancy, where multiple users share the same application instance, and subscription-based pricing, which provides a cost-effective solution for businesses of all sizes. Common examples of SaaS include applications like Google Workspace, Microsoft 365, and Salesforce. In contrast, the other service models do not focus on delivering end-user applications. Infrastructure as a Service (IaaS) provides virtualized computing resources over the internet, allowing users to manage servers, storage, and networking. Platform as a Service (PaaS) offers a platform allowing developers to build, deploy, and manage applications without dealing with the underlying infrastructure, which is not centered around end-user applications.