generated: '2026-08-13'
method: searched
source: live probes of yieldify.com, www.yieldify.com, status.yieldify.com and support.yieldify.com
note: >-
  There is no API to version, deprecate, or SLA. What this file records instead is the observable
  lifecycle of the PRODUCT and its public surface after the Publicis/Epsilon acquisition — because
  that, not a versioning policy, is what a reader needs to know about Yieldify in 2026.
versioning:
  scheme: none-published
  current: null
  docs: null
  note: >-
    No API versioning policy exists. The only versioned documents published are the Data Collection
    Policy (version date 27/05/2026) and the SaaS terms (UK v5.0).
deprecation:
  policy_url: null
  sunset_header: false
  note: No deprecation policy and no RFC 8594 Sunset/Deprecation support — there is no API surface.
sla:
  url: null
  uptime_target: null
status_page:
  url: https://status.yieldify.com
  active: false
  http_status: 200
  final_url: https://yieldify.statuspage.io/inactive
  note: >-
    status.yieldify.com resolves and 200s, but Atlassian Statuspage redirects it to
    /inactive — the page has been deactivated. NO `StatusPage` pointer is emitted in apis.yml:
    a decommissioned status page is not operational transparency, and pointing at it would credit
    a surface that no longer reports anything.
product_lifecycle:
- date: '2013'
  event: Yieldify founded in London by Jay Radia; backed by GV (Google Ventures).
- date: '2023-01'
  event: Acquired by Publicis Groupe and folded into Epsilon.
- date: '2026'
  event: >-
    Product marketed as Epsilon Accelerate. The help center is titled "Epsilon Accelerate Help
    Center for Yieldify" and the Data Collection Policy is headed "Epsilon Accelerate (formerly
    Yieldify)". The customer application still runs under the Yieldify Conversion Platform (YCP)
    name at convert.yieldify.com.
- date: '2026'
  event: >-
    Upgrade path published from the Yieldify tag to the "Epsilon tag", which adds COREid
    capabilities (real-time attribute recognition, lookalike audiences, full-circle retargeting,
    demographics reporting).
  source: https://support.yieldify.com/en/articles/13016967-epsilon-tag-features
web_surface_decay:
- surface: https://yieldify.com
  observed: 301 to https://www.epsilon.com/us/products-and-services/accelerate
- surface: https://www.yieldify.com/ and most marketing paths
  observed: >-
    200, but the response body is the Epsilon Accelerate product page — the legacy Yieldify
    marketing pages (/partners-integrations/, /privacy-accessibility/, /pricing) have been
    rewritten to it. A genuinely unmapped path still returns the old Yieldify 404 page.
- surface: https://www.yieldify.com/blog/
  observed: 200 — the legacy WordPress blog is still live and serves an RSS feed at /feed/.
- surface: https://www.yieldify.com/post-sitemap.xml
  observed: 200, lastmod 2023-06-30 — blog publishing effectively stopped around the acquisition.
- surface: https://status.yieldify.com
  observed: 200 -> yieldify.statuspage.io/inactive (deactivated).
- surface: https://convert.yieldify.com
  observed: 200 — Angular SPA login for the Yieldify Conversion Platform; answers 200 with the app shell for every path.
deprecated_operations: []