Google Analytics is a powerful tool that tracks and analyzes website traffic for informed marketing decisions.
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_gac_
Contains information related to marketing campaigns of the user. These are shared with Google AdWords / Google Ads when the Google Ads and Google Analytics accounts are linked together.
90 days
__utmx
Used to determine whether a user is included in an A / B or Multivariate test.
18 months
_gali
Used by Google Analytics to determine which links on a page are being clicked
30 seconds
_ga_
ID used to identify users
2 years
__utmv
Used to store visitor-level custom variable data.
2 years
__utmz
Stores the traffic source or campaign that explains how the user reached your site.
6 months
__utmt
Used to throttle request rate.
10 minutes
_ga
Used to distinguish users.
2 years
_gat
Used to throttle request rate.
1 minute
_gid
Used to distinguish users.
24 hours
__utma
Used to distinguish users.
Persistent
__utmb
Used to determine new sessions/visits.
30 minutes
__utmc
Used to determine if the user is in a new session/visit.
Session
