ESD for Electronic Software Download (English: Electronic Software Delivery). If you, as a customer, decide to purchase such a license, you will not receive a physical data carrier, but an installation key by e-mail, which you can use to download the program from a server to your computer.
Thus, an ESD license is fundamentally different from the software, which must be unlocked via COA stickers (on which the Microsoft Office Key is located). You will find these license numbers on the underside of the device when you purchase a new laptop, for example. The advantage of an ESD license is of course the fast delivery. Finally, you will receive your installation key for downloading the program from Lizenzking.de immediately after payment.