Understand the Privacy Sandbox Measurement framework and its impact on ad attribution without third-party cookies.
Privacy Sandbox replaces cookies with:
LocalStorage
Attribution Reporting API
SessionStorage
Fingerprinting
AR API underpins sandbox attribution.
Conversion data is aggregated to:
User level
Real time
Daily reports
Session level
Aggregation happens daily.
Which browser first implemented Privacy Sandbox API?
Chrome
Safari
Firefox
Edge
Chrome led sandbox rollout.
Attribution Reporting API uses:
Only aggregate
Only event-level
Event-level and aggregate reports
Only user-level
Both report types supported.
Sandbox measurement requires HTTPS with:
Mixed content
Reporting endpoints
Cookies enabled
IP tracking
Endpoints must be HTTPS.
Install Ad measurement uses:
Fingerprinting
API v1
Measurement API v2
Referrer header
V2 supports install measurement.
Aggregation keys protect privacy by:
Logging IPs
Tracking cookies
Grouping conversions
Storing user IDs
Aggregation groups data.
Attribution window config is set via:
API configuration
URL params
Meta tags
Cookies
Windows set in API calls.
Reports expire after:
30 days
7 days
90 days
1 day
Max expiry is 30 days.
Measurement API limits are documented in:
Chrome spec
W3C only
Firefox spec
Apple docs
Chrome spec details limits.
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