What type of licensing is available for the IPO Platform?

The correct choice, which highlights the available licensing options for the IPO Platform, is user-based and concurrent licensing options. This means that organizations can choose to license the platform based on individual users who need access or opt for a concurrent licensing model that allows a specific number of users to access the system at the same time, regardless of whether those users are the same each time.

This flexibility is particularly important for businesses that have varying needs for access to the IPO platform, as these licensing types can accommodate different operational structures. User-based licensing is beneficial for organizations with a stable number of users, while concurrent licensing can be advantageous for organizations that do not consistently have the same employees accessing the system simultaneously.

The other options, like one-time licensing only or subscription-only models, do not accurately reflect the range of licensing strategies provided by the IPO Platform. Unlimited licensing could imply unrestricted access, which is typically not a standard offering, as most providers aim to balance access with cost efficiency and resource management. Thus, the correct response reflects the versatile licensing options that cater to diverse user requirements.