Which of the following is an example of SaaS?

Software as a Service (SaaS) refers to cloud-based applications that are hosted by a provider and made available to customers over the internet. These applications do not require installation or maintenance on user devices, as they are accessible via web browsers or through dedicated applications.

Google Docs is a prominent example of SaaS, as it allows users to create, edit, and collaborate on documents online without needing to install software on their local machines. This service operates entirely in the cloud, and users can access their documents from any device with internet access.

Cisco Webex and Citrix GoToMeeting are also SaaS solutions. They provide tools for virtual meetings, webinars, and collaboration, all hosted in the cloud. Users can schedule and join meetings seamlessly without needing to download software, although desktop applications may be available for enhanced functionality.

Considering that all these platforms—Google Docs, Cisco Webex, and Citrix GoToMeeting—fit the SaaS model, the correct answer encompasses all of the provided options. Hence, the conclusion that all of these are examples of SaaS is accurate.