specification: API Commons Lifecycle
specificationVersion: '0.1'
provider: Google Optimize
providerId: google-optimize
generated: '2026-09-12'
modified: '2026-09-12'
method: searched
source: https://support.google.com/optimize/answer/12979939
description: >-
  Lifecycle record for Google Optimize. This is a fully retired product: Google Optimize and
  Optimize 360 were sunset on 2023-09-30, every experiment and personalization still running on
  that date was ended, and as of 2026-09-12 every developer surface the product ever had now
  redirects to a single sunset notice. The record below is the tombstone, not a deprecation
  schedule — there is nothing left to deprecate.
status: retired
current_version: null
versioning:
  scheme: null
  note: >-
    No versioning policy is published. The product's only documented API base was
    https://www.googleapis.com/optimize/v1; that host returns HTTP 404 for the path and the
    Google API Discovery directory no longer lists the service at all.
deprecation:
  policy_published: true
  policy_url: https://support.google.com/optimize/answer/12979939
  mechanism: >-
    A single Help Center sunset notice, plus origin-level redirects from every former developer
    and console URL onto that notice. No RFC 8594 Sunset or Deprecation response headers are
    served, because no endpoint remains to serve them.
  sunset_headers: false
  rfc8594: false
events:
  - date: '2023-01-20'
    type: announcement
    summary: >-
      Google announced that Optimize and Optimize 360 would be sunset later in 2023, stating the
      product "did not have many of the features and services that our customers request and need
      for experimentation testing".
    source: https://support.google.com/optimize/answer/12979939
  - date: '2023-09-30'
    type: sunset
    summary: >-
      Google Optimize and Optimize 360 stopped being available. Any experiments and
      personalizations still active on that date ended.
    source: https://support.google.com/optimize/answer/12979939
  - date: '2023-10-23'
    type: dependency-cutover
    summary: >-
      Firebase A/B Testing stopped relying on Google Optimize infrastructure. Firebase used the
      Optimize infrastructure for inference computation for experiments started on or before
      2023-10-23; experiments started after that date use frequentist inference instead.
    source: https://support.google.com/optimize/answer/12979939
migration:
  recommended_path: >-
    Google directs former Optimize users to Google Analytics 4, and states it has "made our APIs
    publicly available so anyone can integrate their A/B testing tool with Google Analytics".
  named_partners:
    - AB Tasty
    - Optimizely
    - VWO
  note: >-
    Named verbatim from the sunset notice as the A/B testing providers Google is collaborating
    with on Google Analytics integrations. They are alternatives, not successors owned by Google.
  successor_surface: >-
    Google Analytics 4 (Admin and Data APIs) — profiled separately in the catalog; those
    contracts belong to Google Analytics, not to this retired product.
sla: null
status_page:
  published: false
  note: >-
    No status page covered Google Optimize, and none exists now. Google Marketing Platform
    published no per-product status dashboard for the service.
deprecated_operations: []
evidence:
  - url: https://support.google.com/optimize/answer/12979939
    status: 200
    note: >-
      302s to https://support.google.com/analytics/answer/12979939 — the live sunset notice,
      titled "[Sunset September 2023] Google Optimize".
  - url: https://developers.google.com/optimize
    status: 200
    note: >-
      The entire Optimize developer portal now redirects to the sunset notice. There is no
      developer documentation left to read.
  - url: https://developers.google.com/optimize/devguides/experiments
    status: 200
    note: Redirects to the sunset notice.
  - url: https://optimize.google.com/
    status: 200
    note: The product console host redirects to the sunset notice.
  - url: https://marketingplatform.google.com/about/optimize/
    status: 200
    note: >-
      The Google Marketing Platform product page for Optimize is gone; the URL redirects up to
      https://marketingplatform.google.com/about/, which no longer lists the product.
  - url: https://www.googleapis.com/optimize/v1
    status: 404
    note: The API base URL recorded in apis.yml no longer resolves to a service.
  - url: https://optimize.googleapis.com/
    status: 404
    note: No dedicated Google API service host exists for Optimize.
  - url: https://www.googleapis.com/discovery/v1/apis
    status: 200
    note: >-
      Google's own API Discovery directory returned 530 services on 2026-09-12 and NONE of them
      matches "optimize" for this product. The filtered query
      https://www.googleapis.com/discovery/v1/apis?name=optimize returns an empty directoryList.
      This is the definitive first-party confirmation that no Optimize API is published.
  - url: https://www.googleoptimize.com/optimize.js
    status: 400
    note: >-
      The first-party client snippet host still resolves to Google infrastructure but serves no
      container; the domain root returns 404.
maintainers:
  - FN: Kin Lane
    email: kin@apievangelist.com