After successfully adding your addon domain to your hosting account, the next step involves uploading your website files onto it.

If, during the creation of the addon domain in cPanel, you opted for the “Create an FTP account associated with this addon domain” feature, leveraging FTP is the way to go for uploading your website files. Utilize the FTP credentials you established during setup. It's worth noting that the default directory for the addon domain is public_html/AddonDomain. This is where you can seamlessly transfer and manage your website files.