Thanks for posting your question in the Microsoft Q&A forum.
You can use the Copy Data activity or Data Flow, depending on whether the files have the same schema or different schemas.
Add the source datasets pointing to the folder containing your CSV files. Use a wildcard file path to select all files you want to merge
- In the Copy Data activity, select the source dataset with the wildcard path
- Set the sink dataset to the location where you want the merged CSV file to be stored
- In the Copy Activity settings, choose the
Merge files
option to combine the data from the source files into a single output file
Please don't forget to close up the thread here by upvoting and accept it as an answer if it is helpful