Data Cloud - Partner Enablement Success
Demo - Parquet File Format for AWS S3
Video demo of Parquet File Format for Data Ingestion (AWS S3 Datastream)
(You'll also see in the background GCS and Azure support for Parquet)
Help Documentation:
https://help.salesforce.com/s/articleView?id=sf.c360_a_supported_file_formats.htm&language=en_US&type=5