 Optimizely Web Experimentation Optimizely Personalization Optimizely Performance Edge If you use Optimizely Web Experimentation with a responsive site and want to deliver different experiences by screen size, you may need to use custom JavaScript audience conditions to target these visitors.  Understand what each native screen measurement object in JavaScript or jQuery describes and align it to a CSS media query.

Use screen measurements to design for responsive breakpoints

 Optimizely Web Experimentation Optimizely Personalization Optimizely Performance Edge Optimizely Experimentation lets you make experiments mutually exclusive when running several experiments that are related at the same time.  For example, you may want to run two experiments on the same algorithm.

Mutually exclusive experiments

Data freshness

Advanced strategies

ai_cta

ai_identity

ai_chat

ai_product


Data set that refers to a person or a role and contains at least one address via which the person or role can receive messages.

recipient

performance-edge-docs

Performance Edge docs

The difference between publish, start, and pause

Experiment types in Web Experimentation

Supported browsers

Get started with Optimizely Performance Edge

Get started

2026 Optimizely Performance Edge release notes

2025 Optimizely Performance Edge release notes

2024 Optimizely Performance Edge release notes

2023 Optimizely Performance Edge release notes

2022 Optimizely Performance Edge release notes

Performance Edge release notes

Experiment configuration

The Visual Editor

Advanced implementation

Track events and metrics

AI tools

Steps to create an experiment

Activate pages

Build experiments

Audiences

Target audiences using the Audience Builder

Target audiences with conditions

Target audiences by Referrer URL

Target audiences with custom JavaScript

Pages and URL targets

Target URLs to choose where your experiment runs

IP Filtering: Exclude IP addresses or ranges from your results

Migrate from uploaded audiences to list attributes

Static and dynamic audience conditions

Target group visitor behaviors

Target visitors

Optimizely Experiment Results page

Events from paused experiments, stopped variations, and archived experiments

Measure and analyze results

Privacy, security, and compliance

Project and account configuration

View change history

Update your site's Content Security Policies (CSP)

Governance and strategy

Implementation issues

Visual editor limitations

Troubleshoot custom analytics integrations

Debug variations by forcing behavior with query parameters

Set a test cookie to preview a live campaign or experiment

Troubleshoot

Open the developer console

Locate IDs for use with the Experimentation APIs

Slack notifications

Tools and utilities

Project Settings: Privacy

Project Settings: jQuery and Project JavaScript settings

Project Settings: Cache Expiration (TTL)

Project settings

End user docs

Performance Edge

Release notes

Optimizely Performance Edge and Optimizely Web Experimentation

How Optimizely Performance Edge works

Backend Proxy

CDN Proxy

Edge Subdomain vs. CDN Proxy

Setup with Edge Subdomain

Custom code and utility functions

Support for Dynamic Websites

Create an experiment

Integrations

Opt Out

Preview each variation

Troubleshoot your Edge setup

Test and troubleshoot

API Reference

Supported Browsers

Developer docs