What stages occur in the system from its startup to the moment a user or process logs in?

From the moment the system is launched until the user or process logs in, several key stages occur:

1. System Initialization — loading necessary services, configurations, and dependencies.
2. Authentication Services Startup — preparing authentication mechanisms (e.g., LDAP, OAuth).
3. Login Request Processing — receiving user data (username, password).
4. Credential Verification — matching with a database or external service.
5. Authorization — determining user access rights after successful authentication.
6. Session Creation — allocating a session token or identifier for further operations.

These stages ensure a secure and proper login process, allowing access control and activity tracking.