What model delivers applications over the cloud with a pay-per-use revenue structure?

The correct response identifies Software as a Service (SaaS) as the model that delivers applications over the cloud with a pay-per-use revenue structure. SaaS allows users to access software applications hosted on the cloud rather than installing and maintaining them on their local devices. This model not only simplifies access to applications, often via a web browser, but also incorporates a pricing strategy where customers pay only for what they use. This can include subscription-based payments that correspond to the level of service or number of users, making it flexible and cost-effective for businesses.

This approach contrasts with other options like Hybrid ERP, which combines on-premises and cloud-based applications but does not specifically focus on a pay-per-use model. Core ERP Component and Extended ERP Component refer to specific systems that integrate business processes but are not defined by the delivery method or pricing structure synonymous with SaaS. Thus, the characteristics of SaaS align perfectly with the question's emphasis on cloud delivery and a pay-per-use model.