Where are our PDF files saved when using the API?

Hello, we are planning to introduce PDF service API. Since we are in accounting, customer data management is important.

We are a company located in Korea. If we use PDF Extract API or Adobe PDF Services API, please let us know where (country) the service is uploaded to.

Also, after we upload and receive conversion information, does the data remain on the server or is it deleted from the server? If it remains, can we delete it immediately through API?