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Learning term

Identity — Accounts, authentication, and sessions

Identity represents a person or service identity with associated account state. This card shows its role in “Accounts, authentication, and sessions” and a safe diagnostic path.

Accounts, authentication, and sessionsLevel 0–3

Orientation

Identity represents a person or service identity with associated account state. At this level, separate purpose, input, and visible result. Place Identity within Accounts, authentication, and sessions before changing settings or files.

Exercise

Try it safely

Check the unique identifier and status when registration creates duplicate or inactive accounts. Open an isolated test environment and run “curl -I https://example.com/login”. Write down the expected output first, do not alter production data, and record one safe next diagnostic step.

curl -I https://example.com/login

Quick check

Can you explain the purpose, observable state, and most common failure source of Identity — Accounts, authentication, and sessions in one sentence each? Which evidence would you preserve before changing anything, and which repeated test would prove that the correction actually worked?