Determine the sentiment expressed in the news from financial perspective.
Options: negative, positive

Boku Inc (AIM:BOKU) will supply its digital wallet and payment methods to Amazon.com in a deal that also allows the retail giant buy up to 3.75% of the mobile payment solutions provider's stock. The deal, which runs for an initial three year term with one year renewal periods, covers the processing of payments for Amazon Prime Video subscriptions through Amazon's primevideo.com site for customers located in certain countries in South East Asia and Africa.
positive