When companies use Google Gmail and Google Drive, they access emails and files on the cloud. Google, the cloud service provider, stores the company's emails and files

on the company's mainframe server located in their office building

physically on Google's servers located in their server farm$($s$)$

on Amazon's servers located in their server farm$($s$)$

on their ERP $($Enterprise Resource Planning$)$ database located in their server farm$($s$)$