S-Controls should move out from the managed package for Marketo Sales Insight
Per Salesforce article, S-Controls have been a deprecated feature since 2010 and replaced by Visualforce. Although it is still supported by Salesforce Developer Support on apps crated prior Feb 2010 (i.e. Marketo Sales Insight), Marketo should have a plan on addressing this issue. It shouldn't let the deprecated features tagged into the managed package and causes confusion.
https://help.salesforce.com/s/articleView?id=000333432&type=1
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