Why is Logout important in Laravel applications, and what problem does it solve for developers?

Why is Logout important in Laravel applications, and what problem does it solve for developers? The key reason to understand logout is that Laravel applications are usually composed of several layers that must work together predictably. Logout invalidates the current authentication state and should clear or rotate relevant session information. Ignoring that boundary can lead to duplicated logic, poor security, unnecessary database work, or code that is difficult to test. Why it matters in practice: Authentication identifies the current user and maintains the authenticated state used by protected application workflows. The specific focus here is logout: Logout invalidates the current authentication state and should clear or rotate relevant session information. 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.