This feature is only available in Accelerate and Scale for MAU pricing models and Business and Enterprise for Impressions pricing models.
You can create a extension under Implementation > Extensions. Each extension has a unique ID that identifies it on the page. If the same extension is inserted in multiple places, the code will only be included once and each instance will call into it by ID. Extensions can be inserted on multiple pages, but you can choose one Editor URL that will appear in the extension builder. The Name and Description are human-readable text in the Optimizely Web Experimentation interface.
To use Extensions in Optimizely Performance Edge, see Custom code and utility functions to learn how to implement custom code for experiments.
Updated about 2 months ago