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Differences between Identity Platform and Firebase Authentication
Identity Platformserves as the backend for Firebase
Authentication with Identity Platform and offers identical features. As an
upgrade from Firebase Authentication, Identity Platform includes the following additional capabilities:
You do not need to change your apps when upgrading from
Firebase Authentication to Identity Platform
(or Firebase Authentication with Identity Platform)
and your app continues to work with existing Firebase services.
Firebase Authentication with Identity Platform is available without a billing instrument up to dailylimits.
Feature comparison
The following tables list differences between Identity Platform, Firebase Authentication with Identity Platform, and Firebase Authentication.
Authentication
Feature
Identity Platform
Firebase Authentication
Sign in with email
Yes
Yes
Sign in with OAuth
Yes
Yes
Sign in with phone
Yes
Yes
Custom authentication
Yes
Yes
Multi-factor authentication
Yes
No
Blocking Functions
Yes
No
Sign in with OIDC
Yes
No
Sign in with SAML
Yes
No
Multi-tenancy
Yes
No
IAP integration
Yes
No
SDKs
Identity Platform and Firebase Authentication both support a collection of
Client and Admin SDKs. To preserve backwards-compatibility, the SDKs
occasionally use Firebase branding and naming conventions.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-09-04 UTC."],[[["\u003cp\u003eIdentity Platform offers all the features of Firebase Authentication and includes additional capabilities such as multi-factor authentication, blocking functions, OIDC and SAML authentication, multi-tenancy support, and IAP integration.\u003c/p\u003e\n"],["\u003cp\u003eUpgrading from Firebase Authentication to Identity Platform does not require changes to your existing applications, and they will continue to function seamlessly with existing Firebase services.\u003c/p\u003e\n"],["\u003cp\u003eUnlike Firebase Authentication, Identity Platform provides features like TISAX compliance, BAA coverage, PCI-DSS scope, and an enterprise SLA with 99.95% uptime.\u003c/p\u003e\n"],["\u003cp\u003eIdentity Platform and Firebase Authentication both support the same set of client and Admin SDK's, providing users with equal compatibility across all available platforms.\u003c/p\u003e\n"],["\u003cp\u003eIdentity Platform and Firebase Authentication are paid services, however Firebase Authentication with Identity Platform is accessible without billing up to certain daily usage limits.\u003c/p\u003e\n"]]],[],null,["# Differences between Identity Platform and Firebase Authentication\n=================================================================\n\n[Identity Platform](/identity-platform) serves as the backend for Firebase\nAuthentication with Identity Platform and offers identical features. As an\nupgrade from Firebase Authentication, Identity Platform includes the following additional capabilities:\n\n- [Multi-factor authentication (MFA)](/identity-platform/docs/web/mfa)\n- [Blocking functions](/identity-platform/docs/blocking-functions)\n- [OpenID Connect (OIDC)](/identity-platform/docs/how-to-enable-application-for-oidc) and [Security Assertion Markup Language (SAML)](/identity-platform/docs/how-to-enable-application-for-saml) authentication.\n- [Multi-tenancy](/identity-platform/docs/multi-tenancy) support.\n- [Identity-Aware Proxy](/iap/docs/authenticate-users-external-identities) integration.\n- [BAA coverage](/security/compliance/hipaa/identity-platform).\n- A 99.95% uptime [SLA](/identity-platform/sla).\n\nYou do not need to change your apps when upgrading from\nFirebase Authentication to Identity Platform\n(or Firebase Authentication with Identity Platform)\nand your app continues to work with existing Firebase services.\n| **Note:** Firebase Authentication with Identity Platform and Identity Platform are [paid services](https://cloud.google.com/identity-platform/pricing).\n\nFirebase Authentication with Identity Platform is available without a billing instrument up to daily [limits](https://cloud.google.com/identity-platform/quotas).\n\nFeature comparison\n------------------\n\nThe following tables list differences between Identity Platform, Firebase Authentication with Identity Platform, and Firebase Authentication.\n\n### Authentication\n\n### SDKs\n\nIdentity Platform and Firebase Authentication both support a collection of\nClient and Admin SDKs. To preserve backwards-compatibility, the SDKs\noccasionally use Firebase branding and naming conventions.\n\n### Compliance and uptime\n\nWhat's next\n-----------\n\n- [Get started with Identity Platform](/identity-platform/docs/quickstart-cicp).\n- [Learn more about Firebase Authentication](https://firebase.google.com/docs/auth)."]]
