Fictional Corp has an existing private cloud in their data center which runs much of the company's basic infrastructure. The company wants to create several new applications on a cloud service provider that use their local on$-$premises Active Directory infrastructure for authentication and permissions management so that they do not have to create new user accounts on the CSP as well. Which of the following cloud service models would Fictional Corp most likely consider as the best option for this deployment?

Private cloud

Public cloud

Community cloud

Hybrid cloud