This answer states that organization edition and license type are the information that the BA needs to determine the features and functionality that UC can implement without additional costs for purchasing additional Salesforce licenses. Organization edition is a version of Salesforce that provides a set of features and functionality based on the needs and size of an organization, such as Essentials, Professional, Enterprise, Unlimited, etc. License type is a category of user access that determines what features and functionality a user can access within an organization, such as Salesforce Platform, Salesforce, Customer Community Plus, etc.
Organization edition and license type are the information that the BA needs to determine the features and functionality that UC can implement without additional costs because they define the limits and capabilities of UC's Salesforce environment, and they affect the pricing and availability of additional licenses. References:
https://trailhead.salesforce.com/en/content/learn/modules/salesforce-business-analyst-quick-look/use-stakeholder