SAP S/4HANA Cloud, Private Edition, is a tailored-to-fit cloud ERP solution that adapts to an organization's unique transformation needs. It is designed to provide the flexibility of a private cloud environment while offering the benefits of cloud computing.

Option B: Single-tenant server

This option is correct. SAP S/4HANA Cloud, Private Edition, operates in a single-tenant environment, meaning that each customer has a dedicated instance of the software. This setup allows for greater customization and control over the system.

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Option C: Software installation on customer site

This option is incorrect. In the private cloud model, the software is hosted on hardware owned by SAP or an infrastructure-as-a-service provider, not on the customer's premises. This approach allows customers to focus on their core business while SAP manages the IT infrastructure.

Option A: Lower total cost of ownership than on-premise

This option is correct. SAP S/4HANA Cloud, Private Edition, offers a subscription-based model, which can lead to a lower total cost of ownership compared to traditional on-premise solutions. This model shifts upfront capital expenses to operating expenses, providing cost efficiency.

Option D: Perpetual license

This option is incorrect. The private cloud edition operates on a subscription-based licensing model rather than a perpetual license. This model provides flexibility and ensures access to the latest updates and innovations.

In summary, SAP S/4HANA Cloud, Private Edition, is characterized by a single-tenant environment and a subscription-based licensing model, with the software hosted by SAP or a service provider rather than installed on the customer's site.