Which Option is an example of SaaS?

Google Apps (now Google Workspace) is a classic SaaS example because users consume ready-to-use applications - such as Gmail, Docs, and Drive - without managing any underlying servers, runtimes, or operating systems. The provider handles all infrastructure, platform, and application layers, leaving the user only responsible for their data and usage.

Amazon AWS is primarily an IaaS and PaaS provider, offering raw compute, storage, and managed services rather than end-user applications.

Google App Engine is a PaaS offering that gives developers a managed runtime to deploy their own applications, not a ready-made application delivered to end users.

Microsoft Azure is an IaaS and PaaS cloud platform where customers build and host their own solutions, not a pre-built application consumed directly.