Final answer:
SAML users can be cached and written to files for performance and efficiency purposes.
Step-by-step explanation:
The statement is true. SAML (Security Assertion Markup Language) users can be cached and written to files for performance and efficiency purposes.
When a user authenticates with a SAML identity provider, their user information, such as name, email, and roles, may be stored in a cache on the service provider side. Storing this information in a cache can minimize the need for repetitive and time-consuming authentication checks for subsequent requests, improving overall system performance.
Additionally, the cached information can be written to a file, which can be useful in scenarios where the cache needs to persist across service restarts or be shared among multiple instances of the service.