A promo code is a password that allows you to get an additional discount on using Yandex Cloud services.
Get and activate a promo code
A promo code can be provided to you as part of Yandex's promotional offer.
You can activate your promo code only once. For more information, see How to activate a promo code.
One promo code can only be linked to one billing account.
All previously issued and unused promo codes that were provided to access the Yandex Cloud management console are no longer valid starting November 27, 2018.