Yes, Snowflake is an ETL (Extract, Transform, and Load) tool, since it is performed in three steps, including:
The data is extracted from the source and saved in data files in a variety of formats including JSON, CSV, XML, and more.
Loads data into a stage, either internal (Snowflake managed location) or external (Microsoft Azure, Amazon S3 bucket, Google Cloud).
The COPY INTO command is used to copy data into the Snowflake database.