Design automatisation feature in Illustrator. any suggestions?

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Hi! I have to create 2000 postcards. Design is the same for all postcards, exept one small picture that on every postcard should be different (so each postcard becomes unique). It is like numbering each postcard, but with picture. Is there a way how to optimise adding those pictures to the postcard design? Not one by one all 2000 times, but using some shortcut automated technique? thanx, looking forward to suggestions 

[Ton Frederiks]

You may want to have a look at Variables:

https://helpx.adobe.com/illustrator/using/data-driven-graphics-templates-variables.html