You have been asked to design a virtual machine for a new application developed in-house. The application will be load tested before it is finally made production ready. The application developers…

You have been asked to design a virtual machine for a new application developed in-house. The application will be load tested before it is finally made production ready. The application developers have created documentation based on data flow and entity dependency. The functionality of the application is critical to the business for a defined project with a client base of a maximum of 12,000 users. Which of the following scaling approaches would best suit this scenario?