The Post-October Audit: Is This Tracking Stack Still Viable?
Objective: Given a stale 2024 'cookieless readiness' inventory of a tracking stack, apply the lesson's post-October-2025 framework to classify each line item as retired, still shipping, or never real, and flag the one action that matters most this quarter.
You're the analytics lead at Zomato. A 2024 'Privacy Sandbox readiness' doc is about to get copy-pasted into next quarter's roadmap by a well-meaning PM who hasn't seen the October 2025 retirement announcement.
Sort each stack component into retired, still shipping, or never was real, then flag the single line item that deserves next sprint's budget.
Before you start
What you'll need
Free path (everything below is enough to finish)
Free, no account friction, sortable columns are enough for a six-row audit
The process
2 steps
Step 01 of 02
On October 17, 2025, Google retired Topics, Protected Audience, and Attribution Reporting on Chrome and Android. CHIPS, FedCM, Private State Tokens, and the W3C interoperable attribution work are the parts of the roadmap that are actually shipping.
The doc lists six 2024-era line items. Which ones are dead, which are alive, and which were never a real product commitment to begin with?
Procedure
- Paste the inventory: Topics API interest-group pipeline, Protected Audience remarketing auction, Attribution Reporting API conversion pings, CHIPS-partitioned session cookies, FedCM sign-in, server-side GTM container
- Tag each row RETIRED, SURVIVING, or NEVER SHIPPED using the lesson's Key Takeaways list as the source of truth
- Highlight any row still marked 'in progress' in the original doc that is actually a retired API
Row 2024 doc status Audited status Topics API interest-group pipeline In progress RETIRED (Oct 17, 2025) Protected Audience remarketing Planned Q1 2026 RETIRED (Oct 17, 2025) Attribution Reporting API pings Live pilot RETIRED (Oct 17, 2025) CHIPS-partitioned session cookies Not started SURVIVING, ship this FedCM sign-in Not started SURVIVING Server-side GTM container Live SURVIVING (keep, expand)
Healthy
Three of six rows get relabeled RETIRED in under ten minutes and removed from the roadmap before anyone estimates dev time against them.
Unhealthy
A sprint gets scoped to 'finish the Protected Audience pilot' because nobody checked the doc's status against the October 2025 announcement.
What this means
A stack inventory is only as good as its last audit date; treat any pre-October-2025 Privacy Sandbox doc as unverified until checked line by line.
So what do I do about it?
| Symptom | Action | Effort |
|---|---|---|
| Roadmap still lists Protected Audience or Topics work as upcoming | Strike the row and redirect the estimated hours to CHIPS or server-side tagging work | 5 min |
| Nobody has re-audited the tracking doc since before October 2025 | Schedule a one-time line-by-line review against the lesson's Key Takeaways | 30 min |
Step 02 of 02
The lesson's playbook ranks server-side tagging, first-party identifiers, and consent-mode modeling above piloting any surviving Privacy Sandbox API, because those are the pieces that carry measurement whether or not Chrome ever changes cookie behavior.
With three dead rows struck and two limited-scope survivors (CHIPS, FedCM) left, which single remaining action should get next sprint?
Procedure
- For each SURVIVING row, write one sentence on what breaks if it's skipped this quarter
- Rank the three surviving rows (CHIPS, FedCM, server-side GTM) by that impact sentence
- Circle the top-ranked row as the sprint recommendation
SURVIVING row Impact if skipped this quarter Server-side GTM expansion First-party conversion data keeps degrading as ad blockers spread CHIPS partitioning Embedded widget tracking silently breaks in Safari/Firefox first FedCM sign-in Login friction stays high, but nothing measurement-critical breaks Recommendation: expand server-side GTM coverage first.
Healthy
The recommendation names one row, not three, and the reasoning is 'what breaks,' not 'what's newest.'
Unhealthy
The memo recommends piloting FedCM first because it's the least-understood API, not because it's the highest-impact gap.
What this means
When every dead API is stripped out, the real prioritization question is which surviving, boring plumbing work protects the most measurement if skipped.
So what do I do about it?
| Symptom | Action | Effort |
|---|---|---|
| Team has bandwidth for exactly one privacy-web project this quarter | Default to expanding server-side tagging coverage before piloting CHIPS or FedCM | dev ticket |
Final deliverable
A one-page audit memo: each 2024 line item relabeled RETIRED/SURVIVING/NEVER SHIPPED, plus one named recommendation for next sprint.
See a reference example
Squarespace tracking-stack audit (excerpt) RETIRED (strike from roadmap): - Topics API interest-group sync — retired Oct 17, 2025 - Attribution Reporting API pilot — retired Oct 17, 2025 SURVIVING (keep): - CHIPS partitioned cookies for embedded template previews - Server-side GTM for checkout conversion events Recommendation: expand server-side GTM to cover the trial-signup funnel before piloting CHIPS further; checkout data loss is the bigger revenue risk.
Success criteria
You're done when you can:
- Every 2024-era line item is correctly relabeled against the lesson's October 2025 Key Takeaways
- The final recommendation names exactly one surviving action, justified by what breaks if skipped