Fintech Deserve, Provider of White-label Credit Card Tech, Secures $50M via Series D led by Mastercard  Crowdfund Insider. : Deserve, a provider of white-label mobile-centric API and (software development kit) SDK-based credit card tech, has secured $50 million in capital through a Series D round that was led by Mastercard. Mission Holdings and Ally Ventures also co-led Deserve’s latest investment round, along with contributions from existing investors Goldman Sachs Asset Management and Sallie Mae.