How to make a transparent GIF using AfterEffects

UPDATE: There is no transparency on either of these GIFs on Medium, leading me to believe Medium renders animated GIFs different from other services. Upon downloading the images, they are again…

How to Make a GIF in After Effects - AEJuice

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After effects GIF - Find on GIFER

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Rendering GIF with a transparent background (Adobe After Effects

Whats the Deal with Transparent Backgrounds?, TeePublic