When your customer purchases a PACM application, a licensing call goes out to Parallels, which acts as a broker and aggregator. Parallels then sends an API call to the software vendor, requesting a license key. When the vendor replies—typically instantly—Parallels passes the license key on to your PACM storefront, which passes it on to your customer in an e-mail bearing your company brand. Wizards then walk your customer through installation, registration, and activation.