I am trying to A/B test our messages using auto-generated random sample lists within Marketo.
On the Marketo website, it says it's avaliable on all versions of the http://cl.ly/image/1B2V3M302u0T
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Then later on down the page, it says to do A/B testing, we need to have Standard or Select in order to access some of the advanced A/B testing features.
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Can anyone point me to A/B testing guidance for Spark users?