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A password manager protects and fills the credentials for accounts you use. Identity and access management (IAM) is an organization-wide system that creates identities, verifies people and machines, decides what they may use, provisions and removes access, and records what happened. A password manager can supply a password or passkey when you sign in to an IAM-controlled service, but it cannot run IAM’s authorization policies, joiner–mover–leaver workflows, single sign-on federation, privileged-access controls or compliance reviews. Most workplaces therefore use both: IAM governs work resources, while a password manager secures credentials that IAM does not centrally control.
What is a password manager?
A password manager is a credential-handling application. It generates a different, long password for each online account, stores those secrets in an encrypted vault and fills them into sign-in forms. NIST describes password managers as improving both security and convenience because users no longer have to memorize or reuse passwords.
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How the vault works
You unlock the vault with a master passphrase or another approved method. The application then decrypts records such as usernames, passwords, one-time codes, secure notes and sometimes payment details. Many products can create passwords with chosen length and character rules, identify reused credentials and synchronize an encrypted vault between devices.
The master secret is the concentration point for risk. If an attacker obtains it, every password in that vault may need to be replaced. NIST therefore recommends a long, unique master passphrase, a recovery design that does not expose that passphrase, and multifactor authentication (MFA) wherever the service supports it.
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What a password manager does not decide
The vault knows which secret belongs to a saved account; it normally does not know whether a person should have that account, which files the account may open, how long access should last or whether a manager approved it. Those are identity and authorization decisions made by IAM or by the individual service.
- Primary job: create, store and present credentials.
- Typical scope: an individual’s consumer and work accounts, or a small team’s shared credentials.
- Authentication help: autofill passwords, generate new ones and sometimes store passkeys or time-based codes.
- Governance: personal password hygiene, sharing controls and vault auditing rather than enterprise entitlement reviews.
What is identity and access management?
IAM is the control system that binds a person, device, workload or software component to an identity and a set of permissions. NIST calls IAM a fundamental cybersecurity capability. Microsoft Learn summarizes its goal as ensuring that “the right people, machines, and software components access the right resources at the right time.”
The identity record
An IAM service maintains records for employees, contractors, partners, service accounts, devices and applications. Attributes can include department, manager, employment status, device posture or geographic constraints. Those attributes feed policies that determine what the identity can request or use.
Authentication and federation
IAM verifies an identity with passwords, MFA, certificates, passkeys, hardware-backed keys or other factors. Federation lets one identity provider authenticate a user to several applications through standards such as SAML or OpenID Connect. Single sign-on (SSO) is the user-facing result: after one successful sign-in, the identity provider issues assertions or tokens to connected services instead of asking for a separate application password each time.
Authorization and access control
After authentication, IAM evaluates authorization. Role-based access control can grant permissions to a job role, while attribute-based policies can use factors such as project, device health or time of day. IAM can enforce least privilege, separate administrative duties and require approval for sensitive entitlements.
Lifecycle, monitoring and governance
Provisioning creates accounts and permissions when someone joins. Change workflows adjust them when the person moves teams or responsibilities, and deprovisioning removes access when employment or a contract ends. IAM also supports privileged-user management, access reviews, reporting, logging and monitoring. NCSC describes this broader scope as policies, processes and systems covering identity management, privileged users, secure architecture, operations and monitoring.
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The shortest distinction is “credential supply” versus “identity and permission control.” A password manager handles secrets for accounts; IAM controls which identities exist, how they authenticate, what they can access and how that access is governed.
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| Comparison point | Password manager | Identity and access management |
|---|---|---|
| Primary job | Generate, encrypt, store and fill passwords or other sign-in secrets. | Create and govern identities, authenticate entities and enforce access policies. |
| Scope | Usually one person, household or team and the accounts saved in its vault. | Organization-wide resources: applications, infrastructure, data, devices and services. |
| Lifecycle | Changes a saved password, rotates a shared credential or alerts about reuse. | Provisions, changes and deprovisions accounts and entitlements as people and systems change. |
| Authentication | Unlocks a vault and supplies a password, passkey or code to a service. | Combines MFA, SSO, federation, certificates, passkeys and policy checks to verify an identity. |
| Authorization | Little or none beyond vault-sharing permissions. | Explicit roles, attributes, entitlements, approvals and least-privilege rules. |
| Governance | Personal or team password hygiene and vault activity. | Access reviews, privileged-access controls, audit trails, compliance evidence and monitoring. |
| Deployment effort | Install an application or browser extension, create a vault and import accounts. | Connect a directory or identity provider to applications, devices and infrastructure; define policies and operating procedures. |
There is overlap at the sign-in screen: a password manager may fill the password used to authenticate to an IAM portal. That does not make the vault an IAM system, just as an employee’s badge does not run the building’s access-control administration.
How do authentication and authorization differ?
Authentication answers “Who or what are you?” Authorization answers “What are you allowed to do?” IAM performs both, in that order, while a password manager mainly helps present one authentication factor.
- Identify the requester. A user, device or workload presents an identifier.
- Authenticate. The system checks a password, passkey, security key, certificate or additional factor. A password manager can fill a password at this stage.
- Evaluate policy. IAM checks roles, attributes, device state, network conditions, approvals and time limits.
- Authorize an action. The service receives only the permissions granted by policy, such as viewing a project or administering a server.
- Record and review. IAM logs the event so administrators can investigate, certify access or revoke it.
A successful password entry proves only that the credential was accepted. It does not prove that the account should still exist, that the device is trustworthy or that the user should reach a particular database. Those questions belong to authorization and governance.
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Can a password manager replace IAM?
No. A password manager cannot replace the identity records, policy engine and lifecycle controls required to run organizational access.
Capabilities a vault cannot provide
- Joiner–mover–leaver automation: creating accounts for a new hire, changing entitlements after a transfer and removing access on departure.
- Federation and SSO: issuing trusted assertions or tokens to many applications from one identity provider.
- Role or attribute decisions: calculating permissions from a user’s job, project, device or risk state.
- Privileged-access management: controlling administrator elevation, time-limited rights, session recording or emergency access.
- Access certification: asking managers to review entitlements and preserving evidence that reviews occurred.
- Machine and workload identity: authenticating services, automation and devices that do not use a person’s vault.
- Central monitoring: correlating sign-ins, policy violations and unusual access across applications and infrastructure.
Why shared passwords are not a substitute
A team vault can share one application password, but everyone using it may appear as the same account. That weakens accountability, makes least privilege difficult and leaves a former team member with access until someone rotates the secret. Individual identities with IAM-managed permissions preserve attribution and allow immediate revocation.
Do I need both a password manager and SSO?
Often, yes. SSO reduces the number of work passwords by federating a central identity to connected applications; a password manager protects the credentials that remain outside that federation.
Where SSO helps
For applications integrated with the organization’s identity provider, a user signs in through the provider and receives a token. Administrators can enforce one MFA policy, disable the identity centrally and review sign-in logs. The application may never receive or store a separate password for that user.
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Where a password manager still matters
- Consumer accounts used for work but not owned by the organization.
- Legacy or small-business applications that lack federation support.
- Break-glass credentials kept for recovery when the identity provider is unavailable.
- Unique administrator passwords that must be stored separately from normal SSO accounts.
- Personal accounts and household services unrelated to the employer.
Do not place an identity provider’s highest-privilege recovery secret in an ordinary shared vault without a documented emergency process. Use separate administrators, protected recovery factors and audited procedures so a compromise of one vault does not become a compromise of the entire identity plane.
What physical security key works with IAM?
A generic FIDO2 security key that supports WebAuthn is the relevant hardware category. It stores a private key in tamper-resistant hardware and proves possession during sign-in, which makes phishing substantially harder than entering a password into a fake site. CISA and NSA guidance identifies FIDO/WebAuthn and public-key cryptography as common phishing-resistant MFA approaches.
What the key does
During enrollment, the key creates a unique key pair for a particular identity provider or application. The private key remains on the device; the service stores the corresponding public key. At sign-in, the site sends a challenge that the key signs after you touch it or enter its PIN. A phishing site cannot use that response for the real domain because WebAuthn binds the credential to the legitimate origin.
What the key does not do
The key is an authentication factor, not an IAM platform. It does not create employee records, assign roles, approve access, remove accounts or produce organization-wide entitlement reports. Those functions remain in the identity provider and connected governance systems.
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- Confirm that the identity provider and critical applications support FIDO2 or WebAuthn.
- Enroll two keys per administrator or other high-risk user: one for daily use and one stored securely as a spare.
- Require a PIN or biometric unlock if the key model and policy support it.
- Register recovery methods and document a lost-key process before enforcing the factor.
- Test sign-in, account recovery and emergency access with a non-production account.
- Record key enrollment and removal in the IAM audit trail, then review registrations periodically.
How should an organization combine the two tools?
Start by assigning each problem to the system designed to solve it. IAM should be the authority for work identities and resource permissions; the password manager should handle credentials that are not centrally federated.
For IAM administrators
- Inventory people, contractors, service accounts, devices and applications.
- Define authoritative sources for employment status and ownership of non-human identities.
- Connect the identity provider to priority applications using federation instead of creating parallel passwords where possible.
- Set MFA requirements, preferring phishing-resistant methods for administrators and sensitive operations.
- Design role and attribute policies around least privilege, separation of duties and time-limited elevation.
- Automate provisioning and deprovisioning, then test exceptions such as contractors and emergency accounts.
- Schedule access reviews and send logs to monitoring systems that security staff can investigate.
For password-manager administrators
- Require a long master passphrase and MFA for every vault account.
- Set sharing groups by job need; do not create one universal vault for an entire department.
- Generate unique credentials for every non-federated service and rotate them when staff change.
- Keep recovery codes and emergency procedures offline or in a separately protected channel.
- Remove departing users from vault groups and verify that shared credentials were rotated.
- Limit browser autofill on untrusted sites and train users to verify the domain before submitting secrets.
For employees and contractors
Use the organization’s SSO entry point for integrated work applications. Use the password manager for approved non-SSO services, personal accounts and unique credentials you are responsible for. Never copy a password from a shared vault into a service that should have an individual IAM identity unless the service owner has explicitly approved that design.
What happens during a joiner, mover or leaver event?
IAM is built for these transitions; a password manager can only assist with the secrets involved.
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Joiner
When a person starts, an authoritative HR or contractor record can trigger creation of an identity, group memberships, MFA enrollment and application accounts. The user receives only the baseline access for the role. A password manager may then supply unique credentials for legacy systems that cannot federate.
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Mover
When the person changes department, IAM recalculates roles and removes entitlements that no longer apply before granting the new set. Vault administrators must separately review shared-password groups and rotate any credential whose membership changed.
Leaver
IAM disables the identity, revokes sessions and tokens, removes group memberships and transfers ownership of business data according to policy. The password-manager process removes the user from shared vaults, rotates credentials they could read and preserves any records required for investigation. Neither step should rely on memory or a departing colleague’s cooperation.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What are the most common implementation mistakes?
Treating MFA as authorization
MFA strengthens proof of identity; it does not grant the correct permissions. Pair strong authentication with role reviews, least privilege and timely deprovisioning.
Putting every secret in one vault
Central storage is convenient but creates concentration risk. Separate ordinary credentials from identity-provider break-glass accounts, restrict vault groups and protect recovery material with independent controls.
Leaving orphaned accounts
An employee can be removed from a vault while a directly assigned application account remains active, or the reverse can happen. Reconcile IAM inventories, application accounts and vault memberships during each lifecycle event.
Using shared administrator logins
Shared credentials obscure who performed an action and make revocation difficult. Prefer named IAM identities with just-in-time elevation; reserve shared secrets for systems that genuinely cannot support individual accounts and monitor them closely.
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Skipping recovery testing
A lost security key, unavailable identity provider or forgotten master passphrase can halt operations. Test spare-key enrollment, recovery codes, emergency accounts and vault restoration under controlled conditions, and record who may approve each action.
What do current standards say about the boundary?
NIST’s Digital Identity Guidelines Revision 4 was released on August 1, 2025. NIST’s guidance on password managers emphasizes unique, long passwords, a strong master passphrase, careful recovery design and MFA. Its IAM resources describe identity and access management as a critical cybersecurity capability rather than merely a password repository.
NSA and CISA published IAM administrator best practices on March 21, 2023, organizing recommendations around identity governance, environmental hardening, federation and SSO, MFA, and auditing and monitoring. Their cloud IAM guidance, published March 7, 2024, highlights phishing-resistant methods such as FIDO/WebAuthn and hardware-bound private keys. These recommendations reinforce the division of labor: use a password manager to protect credentials, and use IAM to govern identities, permissions and evidence across the environment.
Which one should you use?
Choose a password manager when your immediate problem is password reuse, weak credentials, forgotten logins or unsafe sharing. Choose IAM when you must control access for multiple people, machines or applications, enforce roles and MFA, automate onboarding and offboarding, or prove who had access and when. In a modern workplace, the practical answer is usually both: IAM is the authority for work access, while a password manager covers the credentials and accounts that remain outside that authority.
Frequently Asked Questions
Are password managers safe if the vault is hacked?
A well-designed vault encrypts its contents so an attacker should not obtain readable passwords from the storage service alone. The remaining exposure is the master secret and unlocked devices, so use a long unique passphrase, MFA, current software and a tested recovery plan; assume that a stolen master secret requires rotating every affected credential.
Can IAM manage personal accounts used on a work device?
IAM can enforce device or browser policies, but it normally does not own a person’s unrelated consumer accounts. Keep those credentials in a separate personal vault and follow employer rules about data separation, monitoring and acceptable use.
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No. SSO removes separate passwords only for applications connected to the identity provider. Legacy services, emergency accounts, consumer sites and some infrastructure still need credentials or other authentication methods, which is where a password manager remains useful.
What should we do if an employee loses a FIDO2 security key?
Use the organization’s documented recovery method, such as a registered spare key or supervised identity proofing, then revoke the lost key in the identity provider. Review recent sign-in logs and issue a replacement before restoring normal access; do not bypass MFA permanently just to keep work moving.
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