Optimizely logo
A/B TestingMedium complexity

Optimizely

by optimizely

All product names, logos, and trademarks are the property of their respective owners. Their inclusion here is for identification purposes only and does not imply endorsement by Obscurity Ltd.

Sets cookies
Yes
Sends PII
No
Cross-site tracking
No
Consent required
Analytics
Transfer mechanism
Standard Contractual Clauses
Cookies
optimizelyEndUserIdoptimizelySegmentsoptimizelyBuckets

Overview

Experimentation and feature management platform. Provides A/B testing, multivariate testing, feature flags, and personalisation. Processes visitor data to assign experiment variations and measure conversion outcomes.

Detection capabilities

Signature count
2
Detection methods
pagenetwork
Property types
script_srchostname

Performance impact

Performance Impact

Script size
80 KB
Requests per page
1

Common mistakes

  • 1Running experiments that create individual user profiles without analytics consent
  • 2Not distinguishing between functional A/B tests and personalisation experiments in consent settings
  • 3Using the full-stack client-side SDK when server-side or edge evaluation would reduce data collection

Compliance considerations

Collects visitor identifiers, experiment assignments, and conversion events. Basic A/B testing of UI elements may operate under legitimate interest for site optimisation. Personalisation features that build visitor profiles increase consent requirements. Optimizely Edge can reduce client-side data collection. EU data processing available — verify configuration.

Scan your site for optimizely

Run a free Consentmark scan to see how optimizely is loading on your site, whether it respects consent, and where governance gaps exist across your wider tag estate.

Start a free scan