Correct Answer: A
Web 2.0 applications provide the type of service known as Software as a Service (SaaS). SaaS is a cloud computing model that allows users to access and use web-based applications over the internet, without having to install or maintain any software on their own devices. SaaS applications are hosted and managed by a third- party provider, who is responsible for the security, performance, availability, and updates of the software.
SaaS applications are typically accessed through a web browser or a mobile app, and offer features such as user-generated content, social networking, collaboration, and interoperability. Examples of Web 2.0 SaaS applications include Facebook, X, Wikipedia, Gmail, and Salesforce. References:
* What Is Web 2.0? Definition, Impact, and Examples - Investopedia
* Web 2.0 - Wikipedia
* [What is SaaS? Software as a service (SaaS) definition - Salesforce.com]