Final answer:
The number of AD FS servers required depends on the specific requirements, such as the organization's user base, availability requirements, expected traffic load, and budget.
Step-by-step explanation:
The number of AD FS servers required depends on the specific requirements. In general, for small organizations with a low number of users, one AD FS server may be sufficient. For larger organizations or those with a higher number of users, multiple AD FS servers are recommended for better performance and redundancy.
For example, if an organization has a high-availability requirement and wants to ensure that the AD FS service remains available even if one server fails, they may opt for two or more AD FS servers in a load-balanced configuration.
Overall, the number of AD FS servers needed should be determined by considering factors such as the organization's user base, availability requirements, expected traffic load, and budget.