I am conducting marketing research for my company and I am trying to figure out which companies are currently using AEM. Does anyone know how to find this information out?
You might try builtwith.com which has a report of Adobe CQ sites behind their paywall:
Adobe CQ Usage Statistics
The publically available information regarding this is:- Partner Finder
// Go to Adobe Solution Categories -> Select Adobe Experience Manager, Here you will get decent information.
Also, can you let us know, what sort of research you are doing and maybe if you can share it with us once done.
I hope this would help you.
That information is not publicly available.