Specifically: AEM, AAM, Omniture, among others. My favorite is AAM’s “only Adobe could come up with such a stupid data integration” file format: https://docs.adobe.com/content/help/en/audience-manager/user...
The omniture S3 feed comes as a 1004 column TSV. And for fields that capture user inputs, they don’t escape backslashes. But the escape backslashes everywhere else. I filed a ticket on this over a year ago but still no fix.