Snap Ads are skippable video ads that appear between Snapchat Stories. According to Snapchat, Snap Ads won’t appear between every auto-advanced story, only some.
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For brands that want to offer more information that Snap Ads’ 10 second time limit allows, Expandable Snap Ads let Snapchat users swipe up on their device to see a longer video, install an app, or visit the company’s website.