What is Private files in Laravel, and what role does it play in a real application?

What is Private files in Laravel, and what role does it play in a real application? In Laravel, private files should be understood as part of a larger application architecture rather than as an isolated API call. Sensitive documents should normally be stored on private disks with controlled download responses. A strong understanding includes its purpose, the layer where it belongs, the data or request flow it affects, and the situations where another mechanism may be more appropriate. Practical context: Laravel handles uploaded files through the request object and storage APIs, with validation used to control size, type and other constraints. The specific focus here is private files: Sensitive documents should normally be stored on private disks with controlled download responses. This question is designed to test not only terminology, but also how the concept fits into Laravel's request, application, database, security, or deployment workflow.