When you create and activate a new experiment, the integration will create an experiment-specific code snippet. That code snippet will need to be dropped into the HTML body your email. You'll also need to put the Jacquard variant text AMPscript variable in the subject field of your message.
Jacquard will optimise the variant batch proportions over the span of the testing period, with better-performing language variants receiving a greater proportion of the audience per batch.
Generally speaking, the Jacquard broadcast Dynamic Optimisation integration with Journey Builder process is as follows:
Create your Content Builder email.
Create and approve your Jacquard experiment language variants.
Select the Dynamic Optimisation settings and initialise your experiment in Jacquard.
This includes setting the schedule for your experiment.
Jacquard will publish the necessary code snippet into your Salesforce Marketing Cloud Content Builder library and create the required data extensions for the test.
Drop the code snippet into your email and set the language variant variable.
Use Preview and Test in SFMC to ensure you variants are pulling in properly.
Finalise your journey flow.
Add in the updated Content Builder email containing your code snippet.
Add a Random Split activity before the email and apply the required settings.
Add a Wait step on the second path based on recommendations from Jacquard.
Add in the updated email containing your code snippet a second time after the Wait step.
Activate the flow.
Jacquard automatically pulls the results for all variants throughout the test.